How to clear cache on Xbox Series S|X to troubleshoot Rocket League Load Failure errors?
Follow the steps below the clear your Xbox series S|X caches:
Turn off your Xbox Series S/X and unplug it
Unplug all accessories connected to the console
Leave the console unplugged for two minutes
Press the power button and hold it while the console is unplugged
Reconnect the power cord
Power on your Xbox Series S/X
Your console cache should now be cleared.
If you are trying to solve Rocket League Load Failure errors on Xbox and this did not help, try the next step: How do I create new Save Data on Xbox to troubleshoot Rocket League Load Failure errors?