The Workflow Logs page provides you with valuable information about the actions that have been run for your workflows. This includes both success and error messages and also queued items.
Logs are located on the Logs tab for each individual workflow.
Workflow logs are kept for 30 days only.
Example of a workflow with errors:
Workflow stats page with one success and one error message:
Actions that error can be edited and retried directly from the Stats page. Simply click "Edit Settings" and modify the action, then click "Retry with New Settings". Example: