Your printer's firmware reported an error. Due to that OctoPrint will disconnect. Reported error: Failed to enable Bed Leveling"

Hello @melih !

The error message is the same, but the issue seems to be different.
Please open a new Get Help thread with all the information that are requested in the template.

are you running klipper on that printer?

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I already assumed so too...

ha
sry it didn't show me your reply to that post
otherwise I would have waited for his new thread

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I just got this same error after re-flashing a Chiron. The solution was to run an Auto-Levelling from the machine's panel, after which Octoprint connected without error. Quick and easy.