I’m having the same issue: “Invalid Websocket Transport for Zulu” message in the dashboard. I updated the module successfully, I’ve also tried both disabling and uninstalling via the command line and the error message persists.
The only thing that appeared different to me in the instructions above was the output of:
asterisk -x “pjsip show transports”
Transport: <TransportId........> <Type> <cos> <tos> <BindAddress....................>
Transport: 0.0.0.0-udp udp 3 96 0.0.0.0:5060
What can I try next?