Usb device failed now can't start Node Red - please help

I have a usb device that has failed and so I removed it from my build. However now I cannot start nodered as its looking for it. Can anyone advise what I may need to do to get around this please?

This is the error message I’m receiving
Can’t start nodered: 500 Server Error: Internal Server Error (“linux runtime spec devices: error gathering device information while adding custom device “/dev/ttyACM1”: no such file or directory”

Thank you for looking at this post and for any assistant you can offer.

I backed up my nodes then uninstalled it and reinstalled it - this solved the problem.