"Samsung keyboard has stopped" error Samsung Note 5

I recently installed an updated on my Note 5 and yesterday, while typing a message, I received the following pop-up:  "Samsung Keyboard has stopped.  X   Close app"

When I clicked the "x" and it went back to the home screen it worked fine until I went to an app that required me to type anything.  Once my phone timed out and went back to Lock screen, it would not allow me to type in my password.  I can get to the Swipe down menu and use/change settings there but I can do NOTHING ELSE...not even get into my phone.  What can I do? Please help...ANYONE!