There was an error processing your request. while adding build to test group

When I was adding build to test group, this error keeps pop up, I filled all the blanks, how this come?

I have this case for more than 4 days, I sent EMail and called Apple Dev but they do not care about my problem.

It is sad for a big business, but they ignore small customers.

There was an error processing your request. while adding build to test group
 
 
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