Task could not start because the specified interactive session (session"6") could not be locate

Any one familiar with this error, and do you have a solution?

: Last Result: Failure
Result output: "task xx on agent xx" failed because Task could not start because the specified interactive session (session"6") could not be located. (Step 1 in function)

The session number varies per moment. but after a debug of the same it seems to be running normally again.

 

The same here:<br> 09.03.2023 11:36:14,localhost, Task could not start because a valid interactive session could not be located.&#160;&#160;&#160; (Code: 31936, API: 1008)<br> <br> &#160;