Unable to install plugin for Libraoffice

[smaitychemlab-art]

The latest version mendeley-reference-manager-2.137.0-x86_64.AppImage under tool section no plugin for libra office was found. I tried to built it but encountered by following error.

openoffice-plugin-master$ python build.py 2.1 true
LibreOffice plugin version: 2.1
Traceback (most recent call last):
File "/home/sm/Downloads/openoffice-plugin-master/build.py", line 34, in
description_content = file(file_path).read().replace('%PLUGIN_VERSION%', plugin_version)
^^^^
NameError: name 'file' is not defined. Did you mean: 'filter'?

[ArjhanToteck]

#57 should fix this but i dont think this repo is maintained anymore