Re: [Koha] Upgrade to 21.11 Fails

Hi gang Back again after a forced suspension of work. I am trying to upgrade from Koha 21.05 on Debian 9 to 21.11 (OldOldStable) on Debian 10. The upgrade appears to go through, but both public and staff interface display [Internal Server Error]. System was working fine on 21.05/9, and all but Koha work under Debian 10. All suggestions will be appreciated. Cheers, / Bruce / Bruce A. Metcalf, Librarian Augustan Library