After upgrading from 105.5 to 107.7 i get an error as stated in the subject.
I am running hass-core in a docker container on synology nas
I did not change anything and when I go back to 105.5 everything works fine again.
I don’t know why this happens to you, but you can use the /dev/serial/by-id/ name to config your rflink port.
You can get the value from: Supervisor -> System -> Host system -> Hardware
Once configured, try to update again.