gatsby-transformer-yaml Expected "projectsYamlTitleQueryString_2"

Filtering doesn't work with yaml files

Based on official GraphQL docs I tried to make a query with gatsby-transformer-yaml

https://www.graph.cool/docs/reference/graphql-api/query-api-nia9nushae#traversing-a-single-node
query { projectsYaml(title: "project1"){ description keywords published } }

this doesn't work, error being "Argument \"title\" has invalid value \"project1\".\nExpected \"projectsYamlTitleQueryString_2\", found not an object."

also tried this one https://www.graph.cool/docs/reference/graphql-api/query-api-nia9nushae#filtering-by-field
query { allProjectsYaml(filter: { title: "project1" }){ edges{ node{ description keywords date } } } }

error: Argument \"filter\" has invalid value {title: \"project1\"}.\nIn field \"title\": Expected \"projectsYamlConnectionTitleQueryString_2\", found not an object.",

my data structure

src/
data/
projects/
-project1.yml
-project2.yml

and so on.

if this cannot work, maybe you can suggest other solution to get data from particular file?
because if I do only projectsYaml i only get the first one, using allProjectsYaml would leave me filtering the list in JS...

gatsby info --clipboard

System:
OS: Windows 10
CPU: x64 Intel(R) Core(TM) i5-6300HQ CPU @ 2.30GHz
Binaries:
Node: 10.8.0 - D:NodeJSnode.EXE
npm: 6.2.0 - D:NodeJSnpm.CMD
Browsers:
Edge: 42.17134.1.0
npmPackages:
gatsby: ^1.9.277 => 1.9.277
gatsby-image: ^1.0.55 => 1.0.55
gatsby-link: ^1.6.46 => 1.6.46
gatsby-plugin-react-helmet: ^2.0.11 => 2.0.11
gatsby-plugin-sharp: ^1.6.48 => 1.6.48
gatsby-source-filesystem: ^1.5.39 => 1.5.39
gatsby-transformer-json: ^1.0.20 => 1.0.20
gatsby-transformer-sharp: ^1.6.27 => 1.6.27
gatsby-transformer-yaml: ^1.5.18 => 1.5.18

error The system cannot find the path specified.

Error: The system cannot find the path specified.

• envinfo.js:1 Function.e.exports.sync
  [npm]/[gatsby-cli]/[envinfo]/dist/envinfo.js:1:7778

• envinfo.js:1 Object.copySync
  [npm]/[gatsby-cli]/[envinfo]/dist/envinfo.js:1:104976

• envinfo.js:1 Object.t.writeSync.e [as writeSync]
  [npm]/[gatsby-cli]/[envinfo]/dist/envinfo.js:1:123499

• envinfo.js:1
  [npm]/[gatsby-cli]/[envinfo]/dist/envinfo.js:1:124274

• envinfo.js:1 Promise.all.then.e
  [npm]/[gatsby-cli]/[envinfo]/dist/envinfo.js:1:124289

• util.js:16 tryCatcher
  [npm]/[gatsby-cli]/[bluebird]/js/release/util.js:16:23

• promise.js:512 Promise._settlePromiseFromHandler
  [npm]/[gatsby-cli]/[bluebird]/js/release/promise.js:512:31

• promise.js:569 Promise._settlePromise
  [npm]/[gatsby-cli]/[bluebird]/js/release/promise.js:569:18

• promise.js:614 Promise._settlePromise0
  [npm]/[gatsby-cli]/[bluebird]/js/release/promise.js:614:10

• promise.js:693 Promise._settlePromises
  [npm]/[gatsby-cli]/[bluebird]/js/release/promise.js:693:18

• promise.js:638 Promise._fulfill
  [npm]/[gatsby-cli]/[bluebird]/js/release/promise.js:638:18

• promise_array.js:126 PromiseArray._resolve
  [npm]/[gatsby-cli]/[bluebird]/js/release/promise_array.js:126:19

• promise_array.js:144 PromiseArray._promiseFulfilled
  [npm]/[gatsby-cli]/[bluebird]/js/release/promise_array.js:144:14

• promise.js:574 Promise._settlePromise
  [npm]/[gatsby-cli]/[bluebird]/js/release/promise.js:574:26

• promise.js:614 Promise._settlePromise0
  [npm]/[gatsby-cli]/[bluebird]/js/release/promise.js:614:10

• promise.js:693 Promise._settlePromises
  [npm]/[gatsby-cli]/[bluebird]/js/release/promise.js:693:18

error UNHANDLED REJECTION

Error: The system cannot find the path specified.

• envinfo.js:1 Function.e.exports.sync
  [npm]/[gatsby-cli]/[envinfo]/dist/envinfo.js:1:7778

• envinfo.js:1 Object.copySync
  [npm]/[gatsby-cli]/[envinfo]/dist/envinfo.js:1:104976

• envinfo.js:1 Object.t.writeSync.e [as writeSync]
  [npm]/[gatsby-cli]/[envinfo]/dist/envinfo.js:1:123499

• envinfo.js:1
  [npm]/[gatsby-cli]/[envinfo]/dist/envinfo.js:1:124274

• envinfo.js:1 Promise.all.then.e
  [npm]/[gatsby-cli]/[envinfo]/dist/envinfo.js:1:124289

• util.js:16 tryCatcher
  [npm]/[gatsby-cli]/[bluebird]/js/release/util.js:16:23

• promise.js:512 Promise._settlePromiseFromHandler
  [npm]/[gatsby-cli]/[bluebird]/js/release/promise.js:512:31

• promise.js:569 Promise._settlePromise
  [npm]/[gatsby-cli]/[bluebird]/js/release/promise.js:569:18

• promise.js:614 Promise._settlePromise0
  [npm]/[gatsby-cli]/[bluebird]/js/release/promise.js:614:10

• promise.js:693 Promise._settlePromises
  [npm]/[gatsby-cli]/[bluebird]/js/release/promise.js:693:18

• promise.js:638 Promise._fulfill
  [npm]/[gatsby-cli]/[bluebird]/js/release/promise.js:638:18

• promise_array.js:126 PromiseArray._resolve
  [npm]/[gatsby-cli]/[bluebird]/js/release/promise_array.js:126:19

• promise_array.js:144 PromiseArray._promiseFulfilled
  [npm]/[gatsby-cli]/[bluebird]/js/release/promise_array.js:144:14

• promise.js:574 Promise._settlePromise
  [npm]/[gatsby-cli]/[bluebird]/js/release/promise.js:574:26

• promise.js:614 Promise._settlePromise0
  [npm]/[gatsby-cli]/[bluebird]/js/release/promise.js:614:10

• promise.js:693 Promise._settlePromises
  [npm]/[gatsby-cli]/[bluebird]/js/release/promise.js:693:18

(browsers are wrong, i have opera, chrome, and firefox, but don't think this is relevant.

gatsby-config.js: module.exports = { siteMetadata: { title: 'xxx', }, plugins: [ 'gatsby-plugin-react-helmet', 'gatsby-transformer-json', 'gatsby-transformer-sharp', 'gatsby-transformer-yaml', 'gatsby-plugin-sharp', { resolve: 'gatsby-source-filesystem', options: { name: 'data', path: './src/data', }, }, { resolve: 'gatsby-source-filesystem', options: { name: 'projects', path: './src/data/projects', }, }, { resolve: 'gatsby-source-filesystem', options: { name: 'img', path: './src/assets/images', }, }, ], }
package.json: N/A
gatsby-node.js: N/A
gatsby-browser.js: N/A
gatsby-ssr.js: N/A