Well, I went ahead and added an additional 24V power supply, just in case. I cut all the excessive lengths of limits switch wires and made them exactly the right length. I checked again the connections. I used a thicker wire to connect the CAN cable shield to ground. Again made sure that high power wires do not go parallel to signal wires. I started the print again and this time it crashed with a different error:
Lost communication with MCU 'mcu'
I assume that this error is trigerred by the same problem as the previous errors.
I followed prettty much everything listed in this topic.
I do not have additional hardware except from klipper screen. I am not aware of any processes running in parallel. No webcams. The SD card has already been replaced. As far as I can tell I don’t have any macros that overload the system.
Only thing I am not sure about is whether I used the correct Clock Reference. How do I confirm I used the correct one?