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This error is indicative of a connection dropout between you and our servers. Improving the stability of your connection should hopefully solve the issue.
We also see players receive this error if they have an active firewall or network filtering software. Make sure your firewall, antivirus, or network filters have exceptions that allow all traffic through for Rec Room and the app you're using to run it (Steam, Oculus Home, etc.)
If you're using an HTC Vive, the communication between the headset and the controllers may be causing interference with your WiFi network. If this is the culprit, either of the last two options should help.