[HELP]Elgg 1.8.11 Fatal Error

Hi everyone here..I need help, I found this error "Fatal Error. An unrecoverable error has occurred and has been logged. Contact the site administrator with the following information: Exception #1356603838." when deactive a language selector plugin. I have search on the Google for this error code but no result. Can someone help me? Now I can't login. This error appear when I login.