The .meta file Assets/GooglePlayGames/Editor/GooglePlayGamesPlugin_v0.10.09.txt.meta does not have a valid GUID and its corresponding Asset file will be ignored. If this file is not malformed, please add a GUID, or delete the .meta file and it will be recreated correctly


assets > GooglePlayGames > editor 


Delete the two files below

GooglePlayGamesPlugin_v0.10.09.txt.meta

GooglePlayGamesPlugin_v0.10.09.txt