Doesn’t seem to be resolved in Genesis Custom Blocks as I still get this same error after migrating from Block Lab to GCB. With Debug on, I get the following on my staging site unless I deactivate GCB plugin:
Notice: rest_validate_value_from_schema was called incorrectly. The “type” schema keyword for can only be one of the built-in types: array, object, string, number, integer, boolean, and null. Please see Debugging in WordPress for more information. (This message was added in version 5.5.0.) in /nas/content/live/sensimlstaging/wp-includes/functions.php on line 5229