Issue with Orchestrator since upgrading Robots to 20.10.6

I am hoping someone on here will be able to help me as we seem to be getting an intermittent issue.

We have 5 unattended robots set up in a HD configuration. Previously we were running 20.4.3.

Since upgrading, I am occasionally receiving the following error in Orchestrator:

You can see that this is an instantaneous failure and it looks like it is happening if the robot that is assigned is already working on another job.

We use dynamic robot assignment for all allocation so I am unsure why this is happening.

The next thing I was going to do was delete the machine and all the robots and set them up again just in case there is come corruption following the upgrade but before I did that I wanted to see if anyone else had a similar experience

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