总是接口发送不到后端。报错：errno:5,errMsg:request:fail fail:time out ，有时切换网络就可以了
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- wx.onLocalServiceResolveFail: 小程序/开发/API/网络/mDNS/wx.onLocalServiceResolveFail
- wx.offLocalServiceResolveFail: 小程序/开发/API/网络/mDNS/wx.offLocalServiceResolveFail
- wx.onLocalServiceResolveFail#参数: 小程序/开发/API/网络/mDNS/wx.onLocalServiceResolveFail
- wx.offLocalServiceResolveFail#参数: 小程序/开发/API/网络/mDNS/wx.offLocalServiceResolveFail
- wx.onLocalServiceResolveFail#功能描述: 小程序/开发/API/网络/mDNS/wx.onLocalServiceResolveFail
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