My web space provider performed a few server upgrades recently. They cause(d) problems with my MediaWiki and my WordPress installations. Before contacting their helpdesk I upgraded my MediaWiki installation to 1.31.1, and I also fixed an issue with my …/skins/common/images/wiki.png . Bad enough I did not take a note, whether my …/wiki.png problem started getting shown with the web space provider’s server upgrades. Now I am back to the default logo, and everything is fine again.