Hi Andrew,
I use a Raspberry Pi 3B at the remote IGATE but when I tried the a similar installation at home using a Raspberry Pi 4B and an Intel PC Desktop Computer running UBUNTU, your APRSISserver plugin works fine.
I think I have to reinstall YAAC from scratch in the IGATE which is not in my home and try again. There is probably something missing there due to something I have doen wrong. Sorry for the false alarm. It is probably our installation to blame!
I'll keep you posted.
73 de Demetre M0SUY (SV1UY) ..
