Can you show your backend code and your front end code. I can’t follow what you are doing. I am thinking your calling your ’ myUserType’ in the backend. You can only use the suppress options when running queries in the backed. The options will not work if you try and run the query in the frontend. Having your frontend code call the backend to run the query is fine. But without seeing your code I can’t make any sense of what you are doing.
What I can confirm is that you contacts query is definitely failing. 9 out of 10 times it is usually permissions related, in that you do not have the correct permissions to run the query.