error when start rm plugin
[37m[4/25/2017, 2:01:31 PM][39m [1m[31m====================[39m[22m
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[37m[4/25/2017, 2:01:31 PM][39m [1m[31mERROR LOADING PLUGIN homebridge-broadlink-rm:[39m[22m
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[37m[4/25/2017, 2:01:31 PM][39m [1m[31m/usr/lib/node_modules/homebridge-broadlink-rm/accessories/accessory.js:74
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  async setCharacteristicValue (props, value, callback) {
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        ^^^^^^^^^^^^^^^^^^^^^^
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SyntaxError: Unexpected identifier
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    at Object.exports.runInThisContext (vm.js:76:16)
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    at Module._compile (module.js:528:28)
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    at Object.Module._extensions..js (module.js:565:10)
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    at Module.load (module.js:473:32)
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    at tryModuleLoad (module.js:432:12)
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    at Function.Module._load (module.js:424:3)
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    at Module.require (module.js:483:17)
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    at require (internal/module.js:20:19)
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    at Object.<anonymous> (/usr/lib/node_modules/homebridge-broadlink-rm/accessories/aircon.js:1:92)
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    at Module._compile (module.js:556:32)[39m[22m
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[37m[4/25/2017, 2:01:31 PM][39m [1m[31m====================[39m[22m
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[37m[4/25/2017, 2:01:32 PM][39m Loaded plugin: homebridge-synology
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[37m[4/25/2017, 2:01:32 PM][39m Registering accessory 'homebridge-synology.Synology'
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[37m[4/25/2017, 2:01:32 PM][39m ---
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[37m[4/25/2017, 2:01:32 PM][39m Loaded config.json with 0 accessories and 1 platforms.
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[37m[4/25/2017, 2:01:32 PM][39m ---

any hint ?
Thanks