https://bugs.koha-community.org/bugzilla3/show_bug.cgi?id=41102 --- Comment #1 from Hammat wele <hammat.wele@inlibro.com> --- Created attachment 188435 --> https://bugs.koha-community.org/bugzilla3/attachment.cgi?id=188435&action=edit Bug 41102: Error 500 on the About page when biblioserver Zebra configuration is missing When either the <listen id=biblioserver> entry or the <server id=biblioserver listenref=biblioserver> section is not present in koha-conf.xml, the Intranet > About page triggers a 500 Internal Server Error. To test: 2. Restart Apache: sudo systemctl restart apache2 3. Go to Intranet -> About ==> Internal Server Error (500) 4. Now restore the <listen> line and instead comment out the entire <server id=biblioserver listenref=biblioserver>...</server> block. 5. Repeat step 2, 3 ==> Internal Server Error (500) 6. Apply the patch 7. Repeat step 2, 3 ==> There is no Error (500) 8. Uncomment <server id=biblioserver listenref=biblioserver> </server> and Repeat Step 1 9. Repeat step 2, 3 ==> There is no Error (500) -- You are receiving this mail because: You are watching all bug changes.