How to fix "Unfortunately, Messenger has stopped" Facebook Messenger

How to fix "Unfortunately, Messenger has stopped" Facebook Messenger

You probably encounter this error "Unfortunately, Messenger has stopped", when you update your facebook messenger to the latest version.
Solution

we are  in the conclusion that the latest Facebook Messenger have bugs that Facebook need to fix. So the solution for the mean time is to install the previous version of Facebook Messenger. You can find previous Facebook Messenger version from this link