TOPIC: Error on Frontend Locations Page

I am receiving this error on the frontend location's page.
Warning: in_array() expects parameter 2 to be array, null given in /var/www/joomla/libraries/legacy/controller/legacy.php on line 981

I'm not sure what this means nor what I can do about it. I have access to that file if I need to change something. Please advise.

hello I have the same error
I am trying to migrate 2.5 to 3.41 in localhost for now
Warning: in_array () Expects parameter 2 to be array, null given in C: \ xampp \ htdocs \ libraries \ legacy \ controller \ legacy.php on line 981
did you have an answer to this problem?
thank's Eric

This is not an error, but just a warning. Functionality should still be fine. We'll address it still for the next update, but for now, set Joomla error reporting to System Default and it shouldn't show. If it still does, set it to not show errors. You can also change error reporting on the hosting side so warnings and such that are not actual errors do not show.

Nathan,

Even with Joomla error reporting set at System Default, this warning still shows -- and while you and I realize it is just a warning, the user does not know this.

We would rather not have to set Joomla error reporting to None while we wait for your fix (could cause security issues). Please let us know how to patch this.

Thank you,

Peter