Help solve this error: Class CommerceLicenseEntityController does not exist
The error I got was a bit different, so this may not work for you. My error was

Exception 'ReflectionException' with message 'Class CommerceLicenseFile does 
not exist' in [filepath]/entity_bundle_plugin.module:46


I disabled the Commerce License module and renabled it. I can now clear cache without error. Hope that works for you if you have not solved the problem.