Can any explain what would cause the error message below? This if for a customer BOARD on-prem with IIS.
They were previously able to get the logon screen, but would get an error after logging in (seeWeb error using IIS ).
I tried again but now get a different error as below.

No error files are being generated in inetpub\wwwroot\BOARD\App_Data\log
Thanks
Brendan