SignalK does not detect Openplotter devices

[albe92fire]

I take this opportunity to introduce myself, I'm Alberto, I write from Italy and I own a sailboat.

I have recently discovered the world of OpenPlotter and I found it incredibly interesting.

I'm trying to configure my RaspberryPi 4 to work with a NMEA0183 network but I'm having difficulty.

I bought a USB to Serial adapter, I connected it to the Raspberry and it is regularly seen by the Openplotter serial management, I configure it by attributing an alias and relative NMEA0183 setting and the line turns green successfully.

   

Then I go to configure the peripheral (data source) in Signal K, from the drop-down menu I select the serial option, and then I go to choose the peripheral, but I don't see the peripheral with its alias generated by openplotter.

   

        I try to launch the automatic configuration from the Openplotter serial configuration interface it gives me this error: Error: No such file or directory, cannot open /dev/ttyOP_beg

   

I attach some screenshot.

Do you have any suggestions for me?

Thank you in advance.