Hi i followed this tut https://apexapps.oracle.com/pls/apex/r/dbpm/livelabs/run-workshop?p210_wid=3880
and my activity is not moving, and if i try to terminate i got this: Activity Instance for Workflow Instance 14546464451662579 was not found

any way to debug or reset all workflows? the others that are terminated where in my installation before months ago by another person
i got this on debug:
Error: Activity Instance for Workflow Instance 14574551800143165 was not found
- Additional info: Contact your application administrator.
Details about this incident are available via debug id "244987".
- Display location: ON_ERROR_PAGE
- Association type:
- Item name:
- Region id:
- Column alias:
- Row:
- Model instance id:
- Model record id:
- Internal error: true
- Common runtime error: false
- APEX error code: APEX.WORKFLOW.WORKFLOW_ACT_INSTANCE_NOT_FOUND
- SQL code: 100
- SQL error: ORA-01403: no data found
- Backtrace: ORA-06512: at "APEX_240100.WWV_FLOW_WORKFLOW", line 1571
- Statement:
- Component: APEX_APPLICATION_PAGE_PROCESS Terminate (14542785860616747)