I am creating a custom object in a sandbox enviroment that has a stage picklist field with a basic before save flow built around it. I have built similar flows like this without much issue in the past. All the flow does is assign the flow current date time global variable value to a related date/time field whenever the stage picklist is changed to a new value.

For some reason after adding a new stage value and including logic in the flow around this new stage, I am recieving the following error message when changing to the new stage value on edit. This error is not thrown for any of the other stage values. UNKNOWN_EXCEPTION: An unexpected error occurred. Please include this ErrorId if you contact support: 1624955527-975569 (-333829829).

I opened a ticket with support and they told me the flow error message is a null pointer exception. The only value being pushed in the flow is the global date/time flow variable. Also, no apex is being triggered here either. Unfortunatley they are unable to provide more context into this. Has anyone encountered a similar issue like this in flow?