ERROR LOADING PLUGIN homebridge-ewelink:
hi, after two months of using this plugin, i suddenly started to getting this error when startin homebridge :(

4/22/2018, 10:14:48 PM] ERROR LOADING PLUGIN homebridge-ewelink:
[4/22/2018, 10:14:48 PM] /usr/local/lib/node_modules/homebridge-ewelink/node_modules/ws/lib/WebSocket.js:549
$   headers:`{
    ^^^^^^^
SyntaxError: Unexpected identifier
    at Object.exports.runInThisContext (vm.js:76:16)
    at Module._compile (module.js:542:28)
    at Object.Module._extensions..js (module.js:579:10)
    at Module.load (module.js:487:32)
    at tryModuleLoad (module.js:446:12)
    at Function.Module._load (module.js:438:3)
    at Module.require (module.js:497:17)
    at require (internal/module.js:20:19)
    at Object.<anonymous> (/usr/local/lib/node_modules/homebridge-ewelink/node_modules/ws/index.js:9:19)
    at Module._compile (module.js:570:32)
[4/22/2018, 10:14:48 PM] ====================
