Summary:The 'Flexi task' action is causing an error after upgrade. How can I resolve this error "There was an error installing the content type required for the Flexi task action. Please arrange for an Administrator to run the following command ont he server: stsadm.exe -o installfeature -n NintexWorkflowContentTypeUpgrade For more information please contact email@example.com."
Product:All Workflow for SharePoint on-premises
Run these commands in the following order: stsadm.exe -o installfeature -n NintexWorkflowContentTypeUpgrade -force stsadm.exe -o activatefeature -name nintexworkflowcontenttypeupgrade -url http://sitecollection -force