我在fail函数里点击取消后执行了重定向到上一个页面的方法，
然后弹框弹了两次，间隔4 5 s左右
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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