Unable to run Bot task in Workfusion studio

I have installed WorkFusion Intelligent Automation Cloud Enterprise Version 2.4.0
Since few days I am not able to run any bot task in workfusion studio. I have tried with restart the studio n system as well. After restart I am able to run bot task only once after that same… no bot tasks run. Every time I need to restart studio. Any solution for this? why I am facing this issue? Is it related to system configurations?

Any help? thanks in advance.