no alias device created by serial

[yvereg]

What output do you get if you type this into a terminal window?

Code:

ls -ahl /dev/ | grep ttyOP

Hello, many thanks for the answer.
I get nothing  with the command line you suggested me. I did the grep only with tty and the 2 lines I get regarding the GPS are:
lrwxrwxrwx  1 root root          7 mai  18 11:48 gps-platform-3f980000.usb-usb-0:1.1.2:1.0 -> ttyACM0
crw-rw-rw-  1 root root    166,  0 mai  18 11:48 ttyACM0

I check another thing which  allow me to go forward following a signalK restart: creation of a symbolic link
sudo ln -s /dev/ttyACM0 /dev/ttyOP_gnss

thanks for your help