1.20.3

Hello I must say I'm sorry for the mistakes, I'm from Russia. I have a problem with plugins PermissionsEX 1.20.3 version of the game 1.6.4. This error was already here, but the decisions have not been. The error relates to this message: 
regex-matched a value of true from cache 
Not all players have rights. Put your plug-fixe pexdebug_mibby.jar, but it did not help. 1.21 permissionsEX put too did not help. Tell me please, what should I do?