Hello,
I want to test the purchase requisition workflow. When I submit the Workflow I can see in the Workflow History area after a few steps the following message:
Stopped (error): X++ Exception: User {00000000-0000-0000-0000-000000000000} not found.
at SysWorkflowDocument-assert
SysWorkflowDocument-assertPermission
SysWorkflowWorkItem-create
SysWorkflowWorkItem-createWorkItems
SysWorkflow-save
SysWorkflowQueue-resume
When I click on the "show message" on the navigation bar I see also this message:

But I have checked my user. I am enabled and I have a person - see screenshot above. The approver is also enabled and has a person.
Me:

Approver:

When I try to log in in the procurement and sourcing workflow are in order to configure or check workflows I get this message:

Could this be the source of the problem or is it something else? WHat is very strange, if I click then on "continue" I am nevertheless able to ckeck/configure workflows.
Can you help me please?