My lg optimus fuel has the messege; Unfortunately, LG Keyboard has stopped.

[AC Question]

It has been popping up for the past few hours. I tried turning it all the way off and on and it did not work.

 

[B. Diddy]

Welcome to Android Central! This seems to happen more often on LG devices than any other. Can you try installing an alternative keyboard like Google Keyboard or Swiftkey?