Hi!
I see warning message on a search_api view edit page when the facets_exposed_filters is enabled.
Warning: foreach() argument must be of type array|object, null given in facets_exposed_filters_search_api_query_alter() (line 49 of modules/contrib/facets/modules/facets_exposed_filters/facets_exposed_filters.module).
Enable facets_exposed_filters.
Try to edit some search_api view and save some setting.
Improve condition in the facets_exposed_filters_search_api_query_alter() to check if $views->filter is not empty.
Active
3.0
Code
attaching patch for the 3.0.0 with the fix and condition from 3.0.x-dev
I also ran into this issue and the provided patch appears to fix it. Thanks khiminrm!