Tensorflow: ValueError : Variable proj_w already exists, disallowed. did you mean to set reuse=true in VarScope?

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Environment info

Operating System:

Installed version of CUDA and cuDNN: 7.5
(please attach the output of ls -l /path/to/cuda/lib/libcud*):

1. The output from python -c "import tensorflow; print(tensorflow.__version__)". 0.8

If installed from sources, provide the commit hash:

Steps to reproduce

I have created a REST webservice to execute machine translation with some modifications in translate.py. If I run decode function in translate.py alone, on multiple runs I get the right output. But when I try to run the decode function through the webservice that I have created, the first time, I get the translation result. But on the second iteration, I get an error mentioned in the title.

What have you tried?

1. I tried to close the session at the end of decode function in translate.py.
   

   Logs or other output that would be helpful

(If logs are large, please upload as attachment).
logs-1.txt