Error MQTT

[flipkill1985]

/home/landroid/fhem-landroid-s/node_modules/iobroker.landroid-s/lib/mqttCloud.js:15

  | let ident = salt => {
  | ^^^
  |  
  | SyntaxError: Block-scoped declarations (let, const, function, class) not yet supported outside strict mode
  | at exports.runInThisContext (vm.js:53:16)
  | at Module._compile (module.js:374:25)
  | at Object.Module._extensions..js (module.js:417:10)
  | at Module.load (module.js:344:32)
  | at Function.Module._load (module.js:301:12)
  | at Module.require (module.js:354:17)
  | at require (internal/module.js:12:17)
  | at Object. (/home/landroid/fhem-landroid-s/LandroidSrv.js:9:22)
  | at Module._compile (module.js:410:26)
  | at Object.Module._extensions..js (module.js:417:10)