flickering safari page
Currently I'm running Catalina 10.15.7. Yesterday after opening Safari again I had a frantically flickering dialogue box in too left of window saying the page was reloaded because a problem occurred. This happens on evrtry site I try to access.
The only extension I have loaded is Tampermonkey and have had that on for a couple of years.
I am not aware of any other updates that happened during yesterday between sessions on Safari.
Any help is most gratefully received!
MacBook Pro 13″, macOS 10.15