The create user is always loading when the queue does not select any value

Prerequisite: queue is not required to fill
Steps to reproduce the issue

1. Click create user
2. User name, password, tenant, email mobile phone number are filled in correctly
3. Only the queue is empty ()
4. submit
5. error: Display "loading" all the time

expected result
Successfully create the user when the queue is empty, so I can use the tenant's queue, because the priority of the user's queue is higher than that of the tenant's queue.

DolphinScheduler1.2.0
Screenshots