safari will not work after a while

[Bravo2zero]

Im on 10.15 MacBook Air 2017 and Mac mini 2012 and BOTH after a while ( unknown time scale ) refuses to accept a webpage typed in to the address bar. The loading line hangs for hours .... and hours ..... without loading or refreshing.

The only fix is a reboot or Opera / google etc....

 

[2REPOU]

I have the same issue with Safari. It will stop but Transmission, mail etc all still work