Hi, So I've installed a fresh version of koha (19.11) using the Debian package install instructions and then migrated over a database from another koha install. It seemed that it all went well but I am not noticing the respond time of koha dramatically slows throughout the day, and searches start to produce no results, both in staff and OPAC. Turning the machine off and on again seems to solve the issue for a while. I've checked some logs and there are no errors in zebra.log however opac-error.log is overflowing with the following errors: [cgi:error] AH01215: [Fri May 8 07:18:43 2020] opac-detail.pl: Use of uninitialized value $query_cond in concatenation (.) or string at /usr/share/koha/lib/C4/ShelfBrowser.pm line 180.:/usr/share/koha/opac/cgi-bin/opac/opac-detail.pl [cgi:error]: script not found or unable to stat: /usr/share/koha/opac/cgi-bin/opac/Maritime law. [Fri May 08 07:55:52.300494 2020] [cgi:error] AH01215: [Fri May 8 07:55:52 2020] opac-detail.pl: Use of uninitialized value $subs[2] in join or string at /usr/share/perl5/MARC/Field.pm line 646.: /usr/share/koha/opac/cgi-bin/opac/opac-detail.pl Also this error in indexer-output.log DBI connect failed: Can't connect to local MySQL server through socket '/var/run/mysqld/mysqld.sock' (111 "Connection refused") at /usr/share/perl5/DBIx/Class/Storage/DBI.pm line 1517. Any pointers would be great Thanks for your help -- Sent from: http://koha.1045719.n5.nabble.com/Koha-general-f3047918.html