- 🇳🇱Netherlands roderik Amsterdam,NL / Budapest,HU
Duplicate of #3168635: Notice: Undefined index in views_handler_filter->accept_exposed_input() → . Not exactly the same solution, but released with 7.x-3.25 (quite some time ago) and the comment without the $value isn't necessary to continue in the method. left on that issue, indicates it does the same thing.
It just doesn't log a warning about a possibly-broken handler.