When attempting to disable filter 920 on the English Wikipedia, an internal error is triggered 100% of the time.
Actual message:
MediaWiki internal error.
Original exception: [W8tYdQpAMEwAAJhoII0AAAAR] 2018-10-20 16:31:49: Fatal exception of type "Wikimedia\Rdbms\DBQueryError"
Exception caught inside exception handler.
Set $wgShowExceptionDetails = true; at the bottom of LocalSettings.php to show detailed debugging information.
Not being able to disable filters is a great deal. Let's wait for the stacktrace, although I suspect this is T203336, which is already UBN and for which I already expressed my worries about its urgency.
Thanks Krenair and Reedy. BTW @Cyberpower678 a workaround is to re-set throttle parameters which got lost, which you can see in filter history. However please note that this only works because you're disabling the filter: it wouldn't work as it used to (although recently it totally stopped working (since July) just because, alas, throttle is broken, and that's why the other task is UBN).