Resolved Unable to access frontend though WP Admin accessible

[DigitalSplendid]

Server operating system version

18.0.53

Plesk version and microupdate number

Web Admin Se Edition

I was updating Site Icon of of webannum.com from appearance. Suddenly the site went down and getting this message:

There has been a critical error on this website.

Renamed plugin and themes directories but that did not help.

 

[DigitalSplendid]

The issue is resolved and it had something to do with the StudioPress theme. I increased Logo Width from 108 to 760. The issue resolved when restored to 108.