i'm using this feature from long time now in workflow named (email_task) that sends emails to specific users every 5 minutes.(https://answers.laserfiche.com/questions/148061/Feature-Request-Do-Not-Start-a-New-Instance-if-Workflow-is-Already-Running#154017 )
but from 2 months we had power failure that cause some of our servers to shutdown. after that there was no emails sending to the user, and when i try to run it manually i'm getting error (there is already another instance is running) and when i search for any running instance i can not find any . so i think there is one record stuck in the database that causing this problem. how can i solve it ?