create group exception

Groups are not creating with exception: org.bonitasoft.engine.transaction.STransactionCommitException...

Hello anyone, anywere! I have big problem: I make new process and it's need to load on production in our company.
But, I can't create new group and can't select current processes with exceptions! Please help me!

Bonita Community 7.1.0, Cent OS, PostgresSQL 9.5.

I login in Bonita portal by System admin I go to organization tab and choose Groups -> create Group. Next step I fill group Name and Display name, and when Iclic on CREATE button, I have exception:

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