uniapp 启动报错

下载的demo 直接运行 报错
chunk-vendors.js:306 [system] thirdScriptError
TypeError: Cannot set property readyState of # which has only a getter;at socketTask.onOpen callback function
TypeError: Cannot set property readyState of # which has only a getter
at eval (wxsdk3.4.0.js:1)
at chunk-vendors.js:306
at Array.forEach ()
at WebSocket. (chunk-vendors.js:306)