Below are flow errors when these occur, following are debugging steps

.If$1.Wait For Condition Check.If$1.Wait For Condition.Wait For Condition Register RW.Register Record Deleted Listener

Invalid condition provided for table

1. Open the flow execution link would look like below

https:/$flow-designer.do?sysparm_nostack=true#/operations/context/

Go to error

Cause : There should be an action of type Wait for condition or any such action that is referencing a lookup record action fd object.

Verify that in execution flow couldnt find any records in lookup record action hence subsequent actions using that fd object reference have failed.

Fix : Check the lookup record and see if it has any conditions or if the lookup record is getting created or if any records are present in that table during execution of the flow and update the condition to ensure that a match is found.