Certbot: Certbot fails to get certificates under Ubuntu 16.04

Hey, I've just reinstalled my Server and by that upgraded from Ubuntu 14.04 to 16.04.
Everything worked fine under Ubuntu 14.04.
But now on Ubuntu 16.04 Certbot fails to get my certificates.

First, here are the logs for when I run sudo letsencrypt --apache --text -vvvvv after installing apache2, php, and postgres, and certbot via repositories.

user@Server:~$ sudo cat /var/log/letsencrypt/letsencrypt.log
2016-07-08 15:30:26,402:DEBUG:letsencrypt.cli:Root logging level set at -20
2016-07-08 15:30:26,403:INFO:letsencrypt.cli:Saving debug log to /var/log/letsencrypt/letsencrypt.log
2016-07-08 15:30:26,404:DEBUG:letsencrypt.cli:letsencrypt version: 0.4.1
2016-07-08 15:30:26,404:DEBUG:letsencrypt.cli:Arguments: ['--apache', '--text', '-vvvvv']
2016-07-08 15:30:26,404:DEBUG:letsencrypt.cli:Discovered plugins: PluginsRegistry(PluginEntryPoint#apache,PluginEntryPoint#webroot,PluginEntryPoint#null,PluginEntryPoint#manual,PluginEntryPoint#standalone)
2016-07-08 15:30:26,405:DEBUG:letsencrypt.cli:Requested authenticator apache and installer apache
2016-07-08 15:30:26,861:DEBUG:letsencrypt.display.ops:Single candidate plugin: * apache
Description: Apache Web Server - Alpha
Interfaces: IAuthenticator, IInstaller, IPlugin
Entry point: apache = letsencrypt_apache.configurator:ApacheConfigurator
Initialized: <letsencrypt_apache.configurator.ApacheConfigurator object at 0x7f4fa2d0f110>
Prep: True
2016-07-08 15:30:26,862:DEBUG:letsencrypt.cli:Selected authenticator <letsencrypt_apache.configurator.ApacheConfigurator object at 0x7f4fa2d0f110> and installer <letsencrypt_apache.configurator.ApacheConfigurator object at 0x7f4fa2d0f110>
2016-07-08 15:30:36,207:DEBUG:letsencrypt.cli:Picked account: <Account(5e1503fd131a8338a2d21866a6e202c6)>
2016-07-08 15:30:36,208:DEBUG:root:Sending GET request to https://acme-v01.api.letsencrypt.org/directory. args: (), kwargs: {}
2016-07-08 15:30:36,212:INFO:requests.packages.urllib3.connectionpool:Starting new HTTPS connection (1): acme-v01.api.letsencrypt.org
2016-07-08 15:30:36,783:DEBUG:requests.packages.urllib3.connectionpool:"GET /directory HTTP/1.1" 200 280
2016-07-08 15:30:36,786:DEBUG:root:Received <Response [200]>. Headers: {'Content-Length': '280', 'Expires': 'Fri, 08 Jul 2016 15:30:36 GMT', 'Boulder-Request-Id': 'PYGfztG4VlK9dwVTDwiVoHUbFRPIXGwvntjgxqUNRik', 'Strict-Transport-Security': 'max-age=604800', 'Server': 'nginx', 'Connection': 'keep-alive', 'Pragma': 'no-cache', 'Cache-Control': 'max-age=0, no-cache, no-store', 'Date': 'Fri, 08 Jul 2016 15:30:36 GMT', 'X-Frame-Options': 'DENY', 'Content-Type': 'application/json', 'Replay-Nonce': '0-KmJIn0g2KMLRf2m2yFf9w2MT8eDXUtJAmP23ycklI'}. Content: '{\n  "new-authz": "https://acme-v01.api.letsencrypt.org/acme/new-authz",\n  "new-cert": "https://acme-v01.api.letsencrypt.org/acme/new-cert",\n  "new-reg": "https://acme-v01.api.letsencrypt.org/acme/new-reg",\n  "revoke-cert": "https://acme-v01.api.letsencrypt.org/acme/revoke-cert"\n}'
2016-07-08 15:30:36,786:DEBUG:acme.client:Received response <Response [200]> (headers: {'Content-Length': '280', 'Expires': 'Fri, 08 Jul 2016 15:30:36 GMT', 'Boulder-Request-Id': 'PYGfztG4VlK9dwVTDwiVoHUbFRPIXGwvntjgxqUNRik', 'Strict-Transport-Security': 'max-age=604800', 'Server': 'nginx', 'Connection': 'keep-alive', 'Pragma': 'no-cache', 'Cache-Control': 'max-age=0, no-cache, no-store', 'Date': 'Fri, 08 Jul 2016 15:30:36 GMT', 'X-Frame-Options': 'DENY', 'Content-Type': 'application/json', 'Replay-Nonce': '0-KmJIn0g2KMLRf2m2yFf9w2MT8eDXUtJAmP23ycklI'}): '{\n  "new-authz": "https://acme-v01.api.letsencrypt.org/acme/new-authz",\n  "new-cert": "https://acme-v01.api.letsencrypt.org/acme/new-cert",\n  "new-reg": "https://acme-v01.api.letsencrypt.org/acme/new-reg",\n  "revoke-cert": "https://acme-v01.api.letsencrypt.org/acme/revoke-cert"\n}'
2016-07-08 15:30:36,940:INFO:letsencrypt.crypto_util:Generating key (2048 bits): /etc/letsencrypt/keys/0011_key-letsencrypt.pem
2016-07-08 15:30:36,943:INFO:letsencrypt.crypto_util:Creating CSR: /etc/letsencrypt/csr/0011_csr-letsencrypt.pem
2016-07-08 15:30:36,944:DEBUG:letsencrypt.client:CSR: CSR(file='/etc/letsencrypt/csr/0011_csr-letsencrypt.pem', data='0\x82\x02\xa80\x82\x01\x90\x02\x01\x020!1\x1f0\x1d\x06\x03U\x04\x03\x0c\x16nextcloud.mattia98.org0\x82\x01"0\r\x06\t*\x86H\x86\xf7\r\x01\x01\x01\x05\x00\x03\x82\x01\x0f\x000\x82\x01\n\x02\x82\x01\x01\x00\xe6\xbe:9\xab\xceqz4\xcb\x02;W?\x1c\xf3\xc8\xe7G2,\xd3\xea\xea\xba7-|F#\xf9\xc8\x0c\x1bv]\xd0\xcc\xf1%\xcc\x8b{\x8e\x7fodX\xfd-\xf5i\xb6x\xdf\xab\xa7\xe8\x88/\x02\xd9\x0cu\x93\x8f\x1e\x87Ka"\xe7(\xe6\xb9\xff\t\x89;!\x1b\x04\xf9\xd4\xa0\xbc)\xd6\xad\xf4\xe5\xcfH\xfc\x9c\xe3k\x03\xdf\xeb\x9fP\xf6pN>wk\xdfX\x15\x1e(\xc1\xff\xf1Nn\xae\x7f\xf3^yZ\x9fx\xdbt\x01\xfa+\xdf\x1cm\xab(?&\x00]\xd8}\x98\x1c\xdf\x14\xd1\xf5\x92$\xab\x15\xb6\x83$p\xe4\xfe\xfeW\xff\x7f&\xb7\x87\x81I\xeb\xbcL\x96\x85iH\x02\x9a"\x06\xc8\xca\xa9g\xe8c\x9f\xf7\xe9}\\\x8bb\xdd\xfb\xf24\xedZ\x14\xc6}\x90\r\xadMZ\'x %\x84(&\x9d\xf0,H\x13\xae\x14\x89v\xf5Ua\x14\xdcv\x01W\xc5\xd8R=\x17\x97F\x16J\x05<bl\xfc\x0ccR\xd7\x97\xddSI\xc4\x0e\x028y\x02\x03\x01\x00\x01\xa0B0@\x06\t*\x86H\x86\xf7\r\x01\t\x0e13010/\x06\x03U\x1d\x11\x04(0&\x82\x16nextcloud.mattia98.org\x82\x0cmattia98.org0\r\x06\t*\x86H\x86\xf7\r\x01\x01\x0b\x05\x00\x03\x82\x01\x01\x00;\x1d\xca:\xbav\xad,\x93\x07\xb2S\x9f\xffVX$\x8d\xcb\xfd\xd9\xd8\xd7\xdfea\x10W\xb5\x81\xd8\x9e\x94S\xbe\x1aUG \xc9D\xcaF\x94V\x016\xf8\xc1I\xf6@b\x8d7\x91\x1c\xd6 \xe7\x19\xb8\x80Q\xa3a\xb3\xe0\x86\xb6\'\xf7\xce\x9cE\x86x\xae\xa1rG"\xc8\xbd\x12\x7f\xa3>\xeaN\xa8\xdb\xe89Wq6\xe8\xd0\xb2\x88j\xf4X\x1fFj-\x97\xf2\x1cnO\x8c5s\xc3\xa46P[\xf5\xd8\xed"\n\x18a\xfc\xf7"\x0f\x99\xe5\xee\xbe\x9auf\xf3\xcaE<6\x1e\xce\xf1\x99>\\\xe3\x0e\xb5\xf5O\t\xc8\x1f\xf69w\xfaG\xc6\x1f\xb7\x0cCDA\x8f\x0fX\x12l&\x9b\xcd\xc8j\xa4X\xdfn\xe9\xd2\x82\xa7\x05^ \x89\x98\x03\xe9\xb0\x06\xa2o\xfbp\x1a^]\x95a\x0bH\x1e\x84E\xa0:#\xa2\xddbi$\xa50T.\xf9\x1e\x92\t\x00\xdd\xd1yG\xdb\xde\xbb\xfb\x95\xf4\xc4\xc7\x10\xa1>\xed)\xa8\x8e\xed\xecgj\xab\x87V\xfeI', form='der'), domains: ['nextcloud.mattia98.org', 'mattia98.org']
2016-07-08 15:30:36,944:DEBUG:root:Requesting fresh nonce
2016-07-08 15:30:36,945:DEBUG:root:Sending HEAD request to https://acme-v01.api.letsencrypt.org/acme/new-authz. args: (), kwargs: {}
2016-07-08 15:30:36,946:INFO:requests.packages.urllib3.connectionpool:Starting new HTTPS connection (1): acme-v01.api.letsencrypt.org
2016-07-08 15:30:37,532:DEBUG:requests.packages.urllib3.connectionpool:"HEAD /acme/new-authz HTTP/1.1" 405 0
2016-07-08 15:30:37,534:DEBUG:root:Received <Response [405]>. Headers: {'Content-Length': '91', 'Pragma': 'no-cache', 'Boulder-Request-Id': 'JHdVDYTxHAiS5zsJfg6F3qklf1fDauN0eYAERFl13U8', 'Expires': 'Fri, 08 Jul 2016 15:30:37 GMT', 'Server': 'nginx', 'Connection': 'keep-alive', 'Allow': 'POST', 'Cache-Control': 'max-age=0, no-cache, no-store', 'Date': 'Fri, 08 Jul 2016 15:30:37 GMT', 'Content-Type': 'application/problem+json', 'Replay-Nonce': '7AnRjCaga22PYrBWhPrtL_4u7klzRN_VWXkOgDLv1H8'}. Content: ''
2016-07-08 15:30:37,535:DEBUG:acme.client:Storing nonce: '\xec\t\xd1\x8c&\xa0km\x8fb\xb0V\x84\xfa\xed/\xfe.\xeeIsD\xdf\xd5Yy\x0e\x802\xef\xd4\x7f'
2016-07-08 15:30:37,535:DEBUG:acme.jose.json_util:Omitted empty fields: challenges=None, combinations=None, status=None, expires=None
2016-07-08 15:30:37,535:DEBUG:acme.client:Serialized JSON: {"identifier": {"type": "dns", "value": "nextcloud.mattia98.org"}, "resource": "new-authz"}
2016-07-08 15:30:37,536:DEBUG:acme.jose.json_util:Omitted empty fields: x5c=(), x5tS256=None, cty=None, jku=None, x5u=None, x5t=None, crit=(), kid=None, jwk=None, typ=None, alg=None
2016-07-08 15:30:37,541:DEBUG:acme.jose.json_util:Omitted empty fields: x5c=(), x5tS256=None, cty=None, jku=None, x5u=None, nonce=None, crit=(), x5t=None, kid=None, typ=None
2016-07-08 15:30:37,541:DEBUG:root:Sending POST request to https://acme-v01.api.letsencrypt.org/acme/new-authz. args: (), kwargs: {'data': '{"header": {"alg": "RS256", "jwk": {"e": "AQAB", "kty": "RSA", "n": "0ZtqLvfsdse_etXITjBjpJXIkBtiI0RaAz3bI3mT9aVlS3lU3ydrwfwiMDkz-L30WQOoQM8qfY-UfwzzME7cLMO78Ys4FyHRcawxKAqW6qqEg70Er2kqsstVXzVHPRGu5B2UMBgHqJPRgNKEoBjUUg0gPiDVpOGhJs5Nsy_7cdYszV195bCWXoDjS_Ukhr_l2RSjn3QwGMmH-Qwi3NYWiRBh9ofTuB81lI1T4fOxpwsqCGI5kdxR7eDXCLAOrfsfLPgP-cyIFe0QAVuzPAzrCc9eRuakMGIw1XV6zyeFa8VFhwjkQwmfvzIQFbmRS3x_y2l-DogsetOORt2kbuQEfw"}}, "protected": "eyJub25jZSI6ICI3QW5SakNhZ2EyMlBZckJXaFBydExfNHU3a2x6Uk5fVldYa09nREx2MUg4In0", "payload": "eyJpZGVudGlmaWVyIjogeyJ0eXBlIjogImRucyIsICJ2YWx1ZSI6ICJuZXh0Y2xvdWQubWF0dGlhOTgub3JnIn0sICJyZXNvdXJjZSI6ICJuZXctYXV0aHoifQ", "signature": "V8USFes73cZQte3Ew-ZIOwKhRgqyn0R-gDI5fhGeciyXIjqqlFBkAnc4qCh9asCRKyvci-4q1PI0cdscld4UCvkpYRPYiWzinDbHzFgl7DIXqsQXDI8NOzGUfN8HDd_rClK_iWZZTl5RdD2MWC5DjgGqEB1iqJu0QR_0jqsB1ROrdkGy3KDvhQYS0Lk4_dR55TojcCI6hIteWaLxPkAEcesZHU_oS0dxwW2GZ7FI4t6CAhW3UiO-O4LrxxYVFECID8dkvD1tNQvAUAYtNtLEsbLdGPUAQc41O6CVAUXMnF74cAgiUhfCosMQI6byGUBOqIL0Vv5pT8UkzeNMCxghSQ"}'}
2016-07-08 15:30:37,542:INFO:requests.packages.urllib3.connectionpool:Starting new HTTPS connection (1): acme-v01.api.letsencrypt.org
2016-07-08 15:30:37,977:DEBUG:requests.packages.urllib3.connectionpool:"POST /acme/new-authz HTTP/1.1" 201 1007
2016-07-08 15:30:37,979:DEBUG:root:Received <Response [201]>. Headers: {'Content-Length': '1007', 'Expires': 'Fri, 08 Jul 2016 15:30:37 GMT', 'Boulder-Request-Id': 'J5teGhdGv8RdkGeEUMo-p68zH5u8vN1gsFW4102E8Q0', 'Strict-Transport-Security': 'max-age=604800', 'Server': 'nginx', 'Cache-Control': 'max-age=0, no-cache, no-store', 'Connection': 'keep-alive', 'Link': '<https://acme-v01.api.letsencrypt.org/acme/new-cert>;rel="next"', 'Location': 'https://acme-v01.api.letsencrypt.org/acme/authz/9DaiEmrBcFDec4QndyAxoT5U2vanpjrX3t0F31HsqTg', 'Pragma': 'no-cache', 'Boulder-Requester': '2538441', 'Date': 'Fri, 08 Jul 2016 15:30:37 GMT', 'X-Frame-Options': 'DENY', 'Content-Type': 'application/json', 'Replay-Nonce': 'khYlJM7O1VRbD7HqxYfVLGN2zVZ6DRfZEk5yLzq-fGE'}. Content: '{\n  "identifier": {\n    "type": "dns",\n    "value": "nextcloud.mattia98.org"\n  },\n  "status": "pending",\n  "expires": "2016-07-15T15:30:37.863196959Z",\n  "challenges": [\n    {\n      "type": "http-01",\n      "status": "pending",\n      "uri": "https://acme-v01.api.letsencrypt.org/acme/challenge/9DaiEmrBcFDec4QndyAxoT5U2vanpjrX3t0F31HsqTg/163861749",\n      "token": "6eGSUishHge1kTGdUcwU67lNg0qL3Y22hzEI4JSjBOY"\n    },\n    {\n      "type": "dns-01",\n      "status": "pending",\n      "uri": "https://acme-v01.api.letsencrypt.org/acme/challenge/9DaiEmrBcFDec4QndyAxoT5U2vanpjrX3t0F31HsqTg/163861750",\n      "token": "K5WQRe5_e2_iK0-PYdSLH9Rags-2Hb-1s1Xqe36msWQ"\n    },\n    {\n      "type": "tls-sni-01",\n      "status": "pending",\n      "uri": "https://acme-v01.api.letsencrypt.org/acme/challenge/9DaiEmrBcFDec4QndyAxoT5U2vanpjrX3t0F31HsqTg/163861751",\n      "token": "p-LrTcx43lMdjo5jUcZwzC5oFlklQu9W1H6HkUAwIDQ"\n    }\n  ],\n  "combinations": [\n    [\n      2\n    ],\n    [\n      0\n    ],\n    [\n      1\n    ]\n  ]\n}'
2016-07-08 15:30:37,980:DEBUG:acme.client:Storing nonce: '\x92\x16%$\xce\xce\xd5T[\x0f\xb1\xea\xc5\x87\xd5,cv\xcdVz\r\x17\xd9\x12Nr/:\xbe|a'
2016-07-08 15:30:37,980:DEBUG:acme.client:Received response <Response [201]> (headers: {'Content-Length': '1007', 'Expires': 'Fri, 08 Jul 2016 15:30:37 GMT', 'Boulder-Request-Id': 'J5teGhdGv8RdkGeEUMo-p68zH5u8vN1gsFW4102E8Q0', 'Strict-Transport-Security': 'max-age=604800', 'Server': 'nginx', 'Cache-Control': 'max-age=0, no-cache, no-store', 'Connection': 'keep-alive', 'Link': '<https://acme-v01.api.letsencrypt.org/acme/new-cert>;rel="next"', 'Location': 'https://acme-v01.api.letsencrypt.org/acme/authz/9DaiEmrBcFDec4QndyAxoT5U2vanpjrX3t0F31HsqTg', 'Pragma': 'no-cache', 'Boulder-Requester': '2538441', 'Date': 'Fri, 08 Jul 2016 15:30:37 GMT', 'X-Frame-Options': 'DENY', 'Content-Type': 'application/json', 'Replay-Nonce': 'khYlJM7O1VRbD7HqxYfVLGN2zVZ6DRfZEk5yLzq-fGE'}): '{\n  "identifier": {\n    "type": "dns",\n    "value": "nextcloud.mattia98.org"\n  },\n  "status": "pending",\n  "expires": "2016-07-15T15:30:37.863196959Z",\n  "challenges": [\n    {\n      "type": "http-01",\n      "status": "pending",\n      "uri": "https://acme-v01.api.letsencrypt.org/acme/challenge/9DaiEmrBcFDec4QndyAxoT5U2vanpjrX3t0F31HsqTg/163861749",\n      "token": "6eGSUishHge1kTGdUcwU67lNg0qL3Y22hzEI4JSjBOY"\n    },\n    {\n      "type": "dns-01",\n      "status": "pending",\n      "uri": "https://acme-v01.api.letsencrypt.org/acme/challenge/9DaiEmrBcFDec4QndyAxoT5U2vanpjrX3t0F31HsqTg/163861750",\n      "token": "K5WQRe5_e2_iK0-PYdSLH9Rags-2Hb-1s1Xqe36msWQ"\n    },\n    {\n      "type": "tls-sni-01",\n      "status": "pending",\n      "uri": "https://acme-v01.api.letsencrypt.org/acme/challenge/9DaiEmrBcFDec4QndyAxoT5U2vanpjrX3t0F31HsqTg/163861751",\n      "token": "p-LrTcx43lMdjo5jUcZwzC5oFlklQu9W1H6HkUAwIDQ"\n    }\n  ],\n  "combinations": [\n    [\n      2\n    ],\n    [\n      0\n    ],\n    [\n      1\n    ]\n  ]\n}'
2016-07-08 15:30:37,981:DEBUG:acme.challenges:dns-01 was not recognized, full message: {u'status': u'pending', u'token': u'K5WQRe5_e2_iK0-PYdSLH9Rags-2Hb-1s1Xqe36msWQ', u'type': u'dns-01', u'uri': u'https://acme-v01.api.letsencrypt.org/acme/challenge/9DaiEmrBcFDec4QndyAxoT5U2vanpjrX3t0F31HsqTg/163861750'}
2016-07-08 15:30:37,982:DEBUG:acme.jose.json_util:Omitted empty fields: challenges=None, combinations=None, status=None, expires=None
2016-07-08 15:30:37,982:DEBUG:acme.client:Serialized JSON: {"identifier": {"type": "dns", "value": "mattia98.org"}, "resource": "new-authz"}
2016-07-08 15:30:37,983:DEBUG:acme.jose.json_util:Omitted empty fields: x5c=(), x5tS256=None, cty=None, jku=None, x5u=None, x5t=None, crit=(), kid=None, jwk=None, typ=None, alg=None
2016-07-08 15:30:37,987:DEBUG:acme.jose.json_util:Omitted empty fields: x5c=(), x5tS256=None, cty=None, jku=None, x5u=None, nonce=None, crit=(), x5t=None, kid=None, typ=None
2016-07-08 15:30:37,987:DEBUG:root:Sending POST request to https://acme-v01.api.letsencrypt.org/acme/new-authz. args: (), kwargs: {'data': '{"header": {"alg": "RS256", "jwk": {"e": "AQAB", "kty": "RSA", "n": "0ZtqLvfsdse_etXITjBjpJXIkBtiI0RaAz3bI3mT9aVlS3lU3ydrwfwiMDkz-L30WQOoQM8qfY-UfwzzME7cLMO78Ys4FyHRcawxKAqW6qqEg70Er2kqsstVXzVHPRGu5B2UMBgHqJPRgNKEoBjUUg0gPiDVpOGhJs5Nsy_7cdYszV195bCWXoDjS_Ukhr_l2RSjn3QwGMmH-Qwi3NYWiRBh9ofTuB81lI1T4fOxpwsqCGI5kdxR7eDXCLAOrfsfLPgP-cyIFe0QAVuzPAzrCc9eRuakMGIw1XV6zyeFa8VFhwjkQwmfvzIQFbmRS3x_y2l-DogsetOORt2kbuQEfw"}}, "protected": "eyJub25jZSI6ICJraFlsSk03TzFWUmJEN0hxeFlmVkxHTjJ6Vlo2RFJmWkVrNXlMenEtZkdFIn0", "payload": "eyJpZGVudGlmaWVyIjogeyJ0eXBlIjogImRucyIsICJ2YWx1ZSI6ICJtYXR0aWE5OC5vcmcifSwgInJlc291cmNlIjogIm5ldy1hdXRoeiJ9", "signature": "utNx6n8fsljg6Hi2xuqMcmVHYgFUm_m29_CcwLdtMstVy_YvJjFNsIPexyOTeEjl1KA5axh3Lz9gHZz-j_tRgNrWutUJBvKD4xRKwA1gs8qJFh6hiUUo5Uncir_n7J8f_ihnMqRTZGAXuDShRLM11mUMAD5Cjum8awRuR12O0wW9XCyK2L4ARPOJiLWuKCDrfzkKvNOP2GfWl4UPNj-HFQjpMlkVms9e0RYsXRvugoEUfTMRqosAt9JPS3n8SuIOLub04qhAfpgnBPZLgip2la69oi_m1DC3xbrOpkfyefl9GPZ1NznK6PCO4IeOTl24_65gxGtZRIlJXOjm2lo-BA"}'}
2016-07-08 15:30:37,988:INFO:requests.packages.urllib3.connectionpool:Starting new HTTPS connection (1): acme-v01.api.letsencrypt.org
2016-07-08 15:30:38,474:DEBUG:requests.packages.urllib3.connectionpool:"POST /acme/new-authz HTTP/1.1" 201 997
2016-07-08 15:30:38,476:DEBUG:root:Received <Response [201]>. Headers: {'Content-Length': '997', 'Expires': 'Fri, 08 Jul 2016 15:30:38 GMT', 'Boulder-Request-Id': 'exE0StMYMRyHvZhsoeY5gpr4RjZqSIHwTVhmVEwlnQc', 'Strict-Transport-Security': 'max-age=604800', 'Server': 'nginx', 'Cache-Control': 'max-age=0, no-cache, no-store', 'Connection': 'keep-alive', 'Link': '<https://acme-v01.api.letsencrypt.org/acme/new-cert>;rel="next"', 'Location': 'https://acme-v01.api.letsencrypt.org/acme/authz/NZLIJJXF9eOlesysPBep46rttqwLtrW4xITvKO4m0BU', 'Pragma': 'no-cache', 'Boulder-Requester': '2538441', 'Date': 'Fri, 08 Jul 2016 15:30:38 GMT', 'X-Frame-Options': 'DENY', 'Content-Type': 'application/json', 'Replay-Nonce': 'sYD88XRIbKRmM6c6TR2RMqF9smRKpUgfRR6vW93yukE'}. Content: '{\n  "identifier": {\n    "type": "dns",\n    "value": "mattia98.org"\n  },\n  "status": "pending",\n  "expires": "2016-07-15T15:30:38.353277995Z",\n  "challenges": [\n    {\n      "type": "dns-01",\n      "status": "pending",\n      "uri": "https://acme-v01.api.letsencrypt.org/acme/challenge/NZLIJJXF9eOlesysPBep46rttqwLtrW4xITvKO4m0BU/163861764",\n      "token": "gyc-PjZ11Yo3EplHjniX_qqk1MerazX54QAm3vA6KWI"\n    },\n    {\n      "type": "tls-sni-01",\n      "status": "pending",\n      "uri": "https://acme-v01.api.letsencrypt.org/acme/challenge/NZLIJJXF9eOlesysPBep46rttqwLtrW4xITvKO4m0BU/163861765",\n      "token": "3kWeIUQWy9vF8oU2SKgr-wEXeohA3EuYlLERCffmBp8"\n    },\n    {\n      "type": "http-01",\n      "status": "pending",\n      "uri": "https://acme-v01.api.letsencrypt.org/acme/challenge/NZLIJJXF9eOlesysPBep46rttqwLtrW4xITvKO4m0BU/163861766",\n      "token": "CJyZLRqQ5RCt8q2y8x9Nrp5-mLaWDXcmGyD9TKzpk38"\n    }\n  ],\n  "combinations": [\n    [\n      1\n    ],\n    [\n      0\n    ],\n    [\n      2\n    ]\n  ]\n}'
2016-07-08 15:30:38,477:DEBUG:acme.client:Storing nonce: '\xb1\x80\xfc\xf1tHl\xa4f3\xa7:M\x1d\x912\xa1}\xb2dJ\xa5H\x1fE\x1e\xaf[\xdd\xf2\xbaA'
2016-07-08 15:30:38,477:DEBUG:acme.client:Received response <Response [201]> (headers: {'Content-Length': '997', 'Expires': 'Fri, 08 Jul 2016 15:30:38 GMT', 'Boulder-Request-Id': 'exE0StMYMRyHvZhsoeY5gpr4RjZqSIHwTVhmVEwlnQc', 'Strict-Transport-Security': 'max-age=604800', 'Server': 'nginx', 'Cache-Control': 'max-age=0, no-cache, no-store', 'Connection': 'keep-alive', 'Link': '<https://acme-v01.api.letsencrypt.org/acme/new-cert>;rel="next"', 'Location': 'https://acme-v01.api.letsencrypt.org/acme/authz/NZLIJJXF9eOlesysPBep46rttqwLtrW4xITvKO4m0BU', 'Pragma': 'no-cache', 'Boulder-Requester': '2538441', 'Date': 'Fri, 08 Jul 2016 15:30:38 GMT', 'X-Frame-Options': 'DENY', 'Content-Type': 'application/json', 'Replay-Nonce': 'sYD88XRIbKRmM6c6TR2RMqF9smRKpUgfRR6vW93yukE'}): '{\n  "identifier": {\n    "type": "dns",\n    "value": "mattia98.org"\n  },\n  "status": "pending",\n  "expires": "2016-07-15T15:30:38.353277995Z",\n  "challenges": [\n    {\n      "type": "dns-01",\n      "status": "pending",\n      "uri": "https://acme-v01.api.letsencrypt.org/acme/challenge/NZLIJJXF9eOlesysPBep46rttqwLtrW4xITvKO4m0BU/163861764",\n      "token": "gyc-PjZ11Yo3EplHjniX_qqk1MerazX54QAm3vA6KWI"\n    },\n    {\n      "type": "tls-sni-01",\n      "status": "pending",\n      "uri": "https://acme-v01.api.letsencrypt.org/acme/challenge/NZLIJJXF9eOlesysPBep46rttqwLtrW4xITvKO4m0BU/163861765",\n      "token": "3kWeIUQWy9vF8oU2SKgr-wEXeohA3EuYlLERCffmBp8"\n    },\n    {\n      "type": "http-01",\n      "status": "pending",\n      "uri": "https://acme-v01.api.letsencrypt.org/acme/challenge/NZLIJJXF9eOlesysPBep46rttqwLtrW4xITvKO4m0BU/163861766",\n      "token": "CJyZLRqQ5RCt8q2y8x9Nrp5-mLaWDXcmGyD9TKzpk38"\n    }\n  ],\n  "combinations": [\n    [\n      1\n    ],\n    [\n      0\n    ],\n    [\n      2\n    ]\n  ]\n}'
2016-07-08 15:30:38,478:DEBUG:acme.challenges:dns-01 was not recognized, full message: {u'status': u'pending', u'token': u'gyc-PjZ11Yo3EplHjniX_qqk1MerazX54QAm3vA6KWI', u'type': u'dns-01', u'uri': u'https://acme-v01.api.letsencrypt.org/acme/challenge/NZLIJJXF9eOlesysPBep46rttqwLtrW4xITvKO4m0BU/163861764'}
2016-07-08 15:30:38,478:INFO:letsencrypt.auth_handler:Performing the following challenges:
2016-07-08 15:30:38,479:INFO:letsencrypt.auth_handler:tls-sni-01 challenge for nextcloud.mattia98.org
2016-07-08 15:30:38,479:INFO:letsencrypt.auth_handler:tls-sni-01 challenge for mattia98.org
2016-07-08 15:30:39,129:DEBUG:letsencrypt_apache.tls_sni_01:Adding Include /etc/apache2/le_tls_sni_01_cert_challenge.conf to /files/etc/apache2/apache2.conf
2016-07-08 15:30:39,130:DEBUG:letsencrypt_apache.tls_sni_01:writing a config file with text:
 <IfModule mod_ssl.c>
<VirtualHost *:443>
    ServerName ee4f8cf0d737d87fd1b172d09e932afa.6a81bd6a27ca58c1324a11a8f178f300.acme.invalid
    UseCanonicalName on
    SSLStrictSNIVHostCheck on

    LimitRequestBody 1048576

    Include /etc/letsencrypt/options-ssl-apache.conf
    SSLCertificateFile /var/lib/letsencrypt/p-LrTcx43lMdjo5jUcZwzC5oFlklQu9W1H6HkUAwIDQ.crt
    SSLCertificateKeyFile /var/lib/letsencrypt/p-LrTcx43lMdjo5jUcZwzC5oFlklQu9W1H6HkUAwIDQ.pem

    DocumentRoot /var/lib/letsencrypt/tls_sni_01_page/
</VirtualHost>

<VirtualHost *:443>
    ServerName 288e75c418f3b55fa9ce4335bf672833.86b280ba5412aa994ce902544640544f.acme.invalid
    UseCanonicalName on
    SSLStrictSNIVHostCheck on

    LimitRequestBody 1048576

    Include /etc/letsencrypt/options-ssl-apache.conf
    SSLCertificateFile /var/lib/letsencrypt/3kWeIUQWy9vF8oU2SKgr-wEXeohA3EuYlLERCffmBp8.crt
    SSLCertificateKeyFile /var/lib/letsencrypt/3kWeIUQWy9vF8oU2SKgr-wEXeohA3EuYlLERCffmBp8.pem

    DocumentRoot /var/lib/letsencrypt/tls_sni_01_page/
</VirtualHost>

</IfModule>

2016-07-08 15:30:39,175:DEBUG:letsencrypt.reverter:Creating backup of /etc/apache2/apache2.conf
2016-07-08 15:30:39,429:ERROR:letsencrypt.le_util:Error while running apache2ctl graceful.
httpd not running, trying to start
Action 'graceful' failed.
The Apache error log may have more information.

AH00112: Warning: DocumentRoot [/var/lib/letsencrypt/tls_sni_01_page/] does not exist
AH00112: Warning: DocumentRoot [/var/lib/letsencrypt/tls_sni_01_page/] does not exist

2016-07-08 15:30:39,430:DEBUG:letsencrypt.error_handler:Encountered exception:
Traceback (most recent call last):
  File "/usr/lib/python2.7/dist-packages/letsencrypt/auth_handler.py", line 115, in _solve_challenges
    dv_resp = self.dv_auth.perform(self.dv_c)
  File "/usr/lib/python2.7/dist-packages/letsencrypt_apache/configurator.py", line 1554, in perform
    self.restart()
  File "/usr/lib/python2.7/dist-packages/letsencrypt_apache/configurator.py", line 1463, in restart
    self._reload()
  File "/usr/lib/python2.7/dist-packages/letsencrypt_apache/configurator.py", line 1474, in _reload
    raise errors.MisconfigurationError(str(err))
MisconfigurationError: Error while running apache2ctl graceful.
httpd not running, trying to start
Action 'graceful' failed.
The Apache error log may have more information.

AH00112: Warning: DocumentRoot [/var/lib/letsencrypt/tls_sni_01_page/] does not exist
AH00112: Warning: DocumentRoot [/var/lib/letsencrypt/tls_sni_01_page/] does not exist


2016-07-08 15:30:39,430:DEBUG:letsencrypt.error_handler:Calling registered functions
2016-07-08 15:30:39,431:INFO:letsencrypt.auth_handler:Cleaning up challenges
2016-07-08 15:30:39,653:ERROR:letsencrypt.le_util:Error while running apache2ctl graceful.
httpd not running, trying to start
Action 'graceful' failed.
The Apache error log may have more information.


2016-07-08 15:30:39,653:ERROR:letsencrypt.error_handler:Encountered exception during recovery
2016-07-08 15:30:39,653:ERROR:letsencrypt.error_handler:Error while running apache2ctl graceful.
httpd not running, trying to start
Action 'graceful' failed.
The Apache error log may have more information.

Traceback (most recent call last):
  File "/usr/lib/python2.7/dist-packages/letsencrypt/error_handler.py", line 74, in call_registered
    self.funcs[-1]()
  File "/usr/lib/python2.7/dist-packages/letsencrypt/auth_handler.py", line 280, in _cleanup_challenges
    self.dv_auth.cleanup(dv_c)
  File "/usr/lib/python2.7/dist-packages/letsencrypt_apache/configurator.py", line 1575, in cleanup
    self.restart()
  File "/usr/lib/python2.7/dist-packages/letsencrypt_apache/configurator.py", line 1463, in restart
    self._reload()
  File "/usr/lib/python2.7/dist-packages/letsencrypt_apache/configurator.py", line 1474, in _reload
    raise errors.MisconfigurationError(str(err))
MisconfigurationError: Error while running apache2ctl graceful.
httpd not running, trying to start
Action 'graceful' failed.
The Apache error log may have more information.


2016-07-08 15:30:39,655:DEBUG:letsencrypt.cli:Exiting abnormally:
Traceback (most recent call last):
  File "/usr/bin/letsencrypt", line 9, in <module>
    load_entry_point('letsencrypt==0.4.1', 'console_scripts', 'letsencrypt')()
  File "/usr/lib/python2.7/dist-packages/letsencrypt/cli.py", line 1986, in main
    return config.func(config, plugins)
  File "/usr/lib/python2.7/dist-packages/letsencrypt/cli.py", line 662, in run
    lineage, action = _auth_from_domains(le_client, config, domains)
  File "/usr/lib/python2.7/dist-packages/letsencrypt/cli.py", line 474, in _auth_from_domains
    lineage = le_client.obtain_and_enroll_certificate(domains)
  File "/usr/lib/python2.7/dist-packages/letsencrypt/client.py", line 269, in obtain_and_enroll_certificate
    certr, chain, key, _ = self.obtain_certificate(domains)
  File "/usr/lib/python2.7/dist-packages/letsencrypt/client.py", line 252, in obtain_certificate
    return self.obtain_certificate_from_csr(domains, csr) + (key, csr)
  File "/usr/lib/python2.7/dist-packages/letsencrypt/client.py", line 225, in obtain_certificate_from_csr
    authzr = self.auth_handler.get_authorizations(domains)
  File "/usr/lib/python2.7/dist-packages/letsencrypt/auth_handler.py", line 80, in get_authorizations
    cont_resp, dv_resp = self._solve_challenges()
  File "/usr/lib/python2.7/dist-packages/letsencrypt/auth_handler.py", line 115, in _solve_challenges
    dv_resp = self.dv_auth.perform(self.dv_c)
  File "/usr/lib/python2.7/dist-packages/letsencrypt_apache/configurator.py", line 1554, in perform
    self.restart()
  File "/usr/lib/python2.7/dist-packages/letsencrypt_apache/configurator.py", line 1463, in restart
    self._reload()
  File "/usr/lib/python2.7/dist-packages/letsencrypt_apache/configurator.py", line 1474, in _reload
    raise errors.MisconfigurationError(str(err))
MisconfigurationError: Error while running apache2ctl graceful.
httpd not running, trying to start
Action 'graceful' failed.
The Apache error log may have more information.

AH00112: Warning: DocumentRoot [/var/lib/letsencrypt/tls_sni_01_page/] does not exist
AH00112: Warning: DocumentRoot [/var/lib/letsencrypt/tls_sni_01_page/] does not exist