I have a multiple case flow.
Flow works when activated, however, when I do a debug on all case object flow I am getting this debug log error.
CANNOT_EXECUTE_FLOW_TRIGGER : We can't save this record because the “Case: Create and/or Update Contact Email to Case” process failed
 
The flow Case: Create and/or Update Contact Email to Case has already been deleted
 
NOTE, I do not have a related contact record update node in this flow (NOT Case: Create and/or Update Contact Email to Case) 
Even on a new flow I am getting the same error message on debug.
Note : I do not have a field on case object named "[Last Name]"

I have a multiple case flow.
Flow works when activated, however, when I do a debug on all case object flow I am getting this debug log error.
CANNOT_EXECUTE_FLOW_TRIGGER : We can't save this record because the “Case: Create and/or Update Contact Email to Case” process failed
 
The flow Case: Create and/or Update Contact Email to Case has already been deleted
 
NOTE, I do not have a related contact record update node in this flow (NOT Case: Create and/or Update Contact Email to Case) 
Even on a new flow I am getting the same error message on debug.
Note : I do not have a field on case object named "[Last Name]"