Error msg "Samsung has stopped" repeatedly occurring

[SIINote10.1]

I keep getting popup error msgs "Samsung has stopped" ~8 - 12 times a day.
Up to now it's just been irritating, I've recently noticed that coincident to the
message being displayed is a degrading or breakdown in streaming content via Chromecast. ABC website seems to be particularly affected. Last night it orphaned the streaming episode I was watching; kept playing on TV but Chromecast app showed no attached process. I had to hard reboot the Chromecast device. Anyone else run into this message gremlin?

 

[B. Diddy]

Welcome to Android Central! Go to Settings>Apps, tap Menu>Show System, and see if there's an app that's simply called "Samsung." (Or could it be that you omitted a word from the error message?) Try clearing the cache from the app.