Unattended robot has been completed the process successfully, but cloud factory said it Expired (?)

hi All,

I have a unattended robot and running the RPA process daily.

However, sometime I found that, the status process is "Expired" in cloud factory, and the duration is 10 mins.

But, after I review the log file (trace.pscl), It was completed the process in 8 mins only, and without any error log at the end.

Why the cloud factory said it has been expired?