[PLUGIN] RotaryEncoder II

[Wheaten]

@nerd found the issue:

[Plugin] GPIO Buttons: Control Volumio 2/ Volumio 3 with buttons

Dear Volumionauts, I investigated the WebSocket issue affecting gpio-buttons (and likely rotary-encoder) on Volumio 4. Here are the findings: Problem Volumio 4’s package.json declares socket.io 2.3.0, but the actually installed version is 1.7.4: volumio@hanger:~$ cat /volumio/node_modules/socket.io/package.json | grep version "version": "1.7.4", The gpio-buttons plugin specifies "socket.io-client": "^2.3.0" which npm resolves to 2.5.0. This creates a protocol mismatch: Server socket.io …