Hm, it works now, but I got this:
Server error log
- XF\PrintableException: Line 22: Expected valid expression.
- src/XF/Mvc/Entity/Entity.php:1083
- Generated by: ...
- 19. dec 2017 ob 22:07
Stack trace
#0 src/XF/Service/Advertising/Writer.php(84): XF\Mvc\Entity\Entity->save()
#1 src/XF/Repository/Advertising.php(70): XF\Service\Advertising\Writer->write()
#2 src/XF/Entity/Advertising.php(37): XF\Repository\Advertising->writeAdsTemplate()
#3 src/XF.php(244): XF\Entity\Advertising->XF\Entity\{closure}()
#4 src/XF/Mvc/Dispatcher.php(137): XF::triggerRunOnce(true)
#5 src/XF/Mvc/Dispatcher.php(41): XF\Mvc\Dispatcher->dispatchLoop(Object(XF\Mvc\RouteMatch))
#6 src/XF/App.php(1880): XF\Mvc\Dispatcher->run()
#7 src/XF.php(328): XF\App->run()
#8 admin.php(13): XF::runApp('XF\\Admin\\App')
#9 {main}
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Maybe it's temporary, because it works now with no error.