how to run this project

[cai-xiaoming]

Today i download this project,but i can't load this plugin by using "Project Settings--Plugins".This is the issue i meet.
"Unable to load addon script from path: 'res://addons/fontawesome/Plugin.cs'. This might be due to a code error in that script.
Disabling the addon at 'res://addons/fontawesome/plugin.cfg' to prevent further errors."
When i want to run plugin write by CSharp,it will fail.Did you ever meet situation like this ? Would you like to tell me how to deal with it?Thank you very much.