On clean 1.35 wiki the extension doesn't work. When I try to edit/dreate no matter if there are allowed domains or no, I get the following error:
[X7E-JjVc8eyuQ@wZv-XX8wAAAA8] 2020-11-15 14:45:58: Неустранимое исключение типа «Error»
This bug appears only when the extension is active, is tested on clean MediaWiki 1.35 with Russian locale.