No /tmp/klipper_host_mcu file

Basic Information:

Printer Model: Voron 2.4
MCU / Printerboard: Octopus
klippy.log

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Describe your issue:

I am trying to use rpi as second controller and went through every step in the RPi microcontroller klipper page. I then got an error after adding [mcu rpi] to my printer config file. this is what is on the Log.

“mcu ‘rpi’: Unable to open port: [Errno 2] No such file or directory: ‘/tmp/klipper_host_mcu’”

I then checked the tmp folder and no file of that name exists. I have searched for an answer and have read every step and preformed every step again on RPi microcontroller page. I did change my rpi host name from pi to UFO. not sure if this has any effect or not. any answers would be great. thank you.

I don’t know how, but after installing a panel on the voron and coming back to the software the file showed up. I don’t know if it needed some time to appear in the folder or if it was from yet another restart of firmware. now the mcu rpi works like expected.