Vibration stops working

Bangle.buzz() does nothing unfortunately. I also tried Bangle.buzz(10000, 1), maybe buzzing for a longer time would, I don't know, unstick things, but no, nothing either.

I don't have installed any App with "quiet" in the App name.

Here's the result for require("Storage").readJSON("setting.json"):

={ ble: true, blerepl: true, log: 0, timeout: 10,
  vibrate: true,
  beep: "vib",
  timezone: -4, HID: false,
  clock: "antonclk.app.js",
  "12hour": false, brightness: 1,
  options: { wakeOnBTN1: true, wakeOnBTN2: true, wakeOnBTN3: true, wakeOnFaceUp: false,
    wakeOnTouch: false, wakeOnTwist: false, twistThreshold: 819.2, twistMaxY: -800, twistTimeout: 1000 },
  theme: { fg: 65535, bg: 0, fg2: 65535, bg2: 8,
    fgH: 65535, bgH: 31, dark: true },
  clockHasWidgets: true,
  launcher: "dtlaunch.app.js",
  rotate: 0,
  touch: { x1: -4, y1: 32, x2: 196, y2: 177 }
 }