Network request failed android (emulator and device)

🐛 Bug Report

Environment

Expo CLI 3.0.10 environment info: System: OS: macOS 10.14.5 Shell: 5.3 - /bin/zsh Binaries: Node: 8.9.0 - ~/.nvm/versions/node/v8.9.0/bin/node Yarn: 1.12.3 - /usr/local/bin/yarn npm: 5.5.1 - ~/.nvm/versions/node/v8.9.0/bin/npm IDEs: Android Studio: 3.4 AI-183.6156.11.34.5692245 Xcode: 10.3/10G8 - /usr/bin/xcodebuild npmPackages: expo: ^32.0.0 => 32.0.6 react: 16.5.0 => 16.5.0 react-native: https://github.com/expo/react-native/archive/sdk-32.0.0.tar.gz => 0.57.1 react-navigation: 2.3.1 => 2.3.1 npmGlobalPackages: expo-cli: 3.0.10

Android device and emulator

Steps to Reproduce

So I’m really new to expo and don’t know how all your magic works, and I’m having an error like this:

[Unhandled promise rejection: TypeError: Network request failed]
- node_modules/react-native/Libraries/vendor/core/whatwg-fetch.js:504:29 in onerror
- node_modules/event-target-shim/lib/event-target.js:172:43 in dispatchEvent
- ... 8 more stack frames from framework internals

So I’m having this error on both emulator and device build - TypeError: Network request I’ve found a lot of issues related to problem like this, but the solutions did not really help.

Here is how I’m making request:

const response = await fetch(`${urls.apiBase}/auth/logout`, {
    ...fetchParams,
    method: 'POST',
    headers: {
      'Content-Type': 'application/json; charset=utf-8',
      Authorization: `bearer ${token}`,
    },
    body: JSON.stringify({}),
  });

and here is my app.json:

{
  "expo": {
    "name": "CommonSpace",
    "description": "CommonSpace is a prototype built by Sidewalk Labs to explore how technology might enable the study of public life. It allows space managers and community groups to study activity in their public spaces in accordance with the Public Life Data Protocol.",
    "githubUrl": "https://github.com/sidewalklabs/commonspace",
    "primaryColor": "#4A90E2",
    "slug": "CommonSpace",
    "privacy": "unlisted",
    "sdkVersion": "32.0.0",
    "scheme": "commonspace",
    "platforms": [
      "ios",
      "android"
    ],
    "version": "1.0.0",
    "orientation": "portrait",
    "icon": "./assets/images/AppIcon.png",
    "splash": {
      "image": "./assets/images/CS_LaunchImage.png",
      "resizeMode": "contain"
    },
    "updates": {
      "enabled": false
    },
    "assetBundlePatterns": [
      "**/*"
    ],
    "ios": {
      "bundleIdentifier": "com.commonspace.commonspace",
      "supportsTablet": true,
      "config": {
        "googleMapsApiKey": "GENERATE_A_MAPS_KEY",
        "googleSignIn": {
          "reservedClientId": "GENERATE_A_RESERVEDCLIENTID"
        }
      },
      "infoPlist": {
        "NSLocationWhenInUseUsageDescription": "Your location is used to show you where you are on a map of your assigned survey zone. Your location is never stored or transmitted off your device."
      }
    },
    "android": {
      "package": "com.commonspace.commonspace",
      "versionCode": 1,
      "permissions": [
        "ACCESS_COARSE_LOCATION",
        "ACCESS_FINE_LOCATION",
        "CAMERA"
      ],
      "config": {
        "googleMaps": {
          "apiKey": "GENERATE_A_MAPS_KEY"
        },
        "googleSignIn": {
          "apiKey": "GENERATE_AN_AUTH_KEY",
          "certificateHash": "GENERATE_A_CERTIFICATE_HASH"
        }
      }
    },
    "extra": {
      "googleAuthClientId": {
        "expo": {
          "android": "603386649315-vp4revvrcgrcjme51ebuhbkbspl048l9.apps.googleusercontent.com",
          "ios": "603386649315-vp4revvrcgrcjme51ebuhbkbspl048l9.apps.googleusercontent.com"
        },
        "standalone": {
          "android": "GENERATE_AN_AUTH_KEY",
          "ios": "GENERATE_AN_AUTH_KEY"
        },
        "guest": {
          "android": "GENERATE_AN_AUTH_KEY",
          "ios": "GENERATE_AN_AUTH_KEY"
        }
      }
    }
  }
}

Also, I know that there is some issue like this - https://github.com/expo/expo/issues/1606 but did not find solution there.

[nfabacus]

yes, I also have the same issue only for android simulator. web and ios simulator work fine. For the time being for android simulator, I am using ngrok to access localhost via https.

[onlyargon]

This is fixed for me when I deploy endpoint with https