Upgrade impossoble

[PowerQuest]

@alfredb

If you have a tool like phpMyAdmin to access the DB, you can use it, to disable all the apps in question. Go to table oc_appconfig, configkey enabled, set configvalue to No. Repeat for each app in question.

Yes that did the trick. I just disabled the PDF viewer app and then turned off maintenance mode, run the DB upgrade and done!

Thanks a bunch @anon21401411 for the tip!