Excercise 9 - Create a Related Action - (System Stuck) Not able to proceeding even after pressing Ok button

Hi Appian Experts

In Excercise 9 - Create a Related Action -

After completing all the step on last part  - No Response (System Stuck)

Not able to proceeding even after pressing Ok button.

No error message / Nothing just not able to proceed to Create New Related Action

Is it technical problem???  Please help. Thanks

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