Controlling a Canon EOS 50D with Stellarmate OS running on a Raspberry Pi 4. Camera locks up during image sequence capture after a few images captured successfully (the exact number varies), and the sequence is aborted. Camera displays "Err 30 Shooting is not possible. Turn the power switch to <OFF> and <ON> again or re-install the battery." Power cycling as advised does clear the error. After restarting OKOS I am able to start a new sequence, only to have it abort again.

I have checked, camera battery is fully charged. The camera's mirror mechanism works fine in hand-held burst shooting mode, cycling rapidly for 50+ exposures without error.

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