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After upgrade to 0.59 the development build fails with the following error. It worked fine till 0.58.6

"Unable to load script. Make sure you're either running a Metro server (run 'react-native start') or that your bundle is packaged correctly for release."

I have also added android:usesCleartextTraffic="true" in AndroidManifest.xml but it still won't work. The release build works fine though.

Ehsan
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  • try to clean run `./gradlew clean` from android folder once to clean up previous builds and run again – warl0ck Mar 18 '19 at 06:16
  • Have tried that already, have even cleared node_modules folder but it still won't work. – Ehsan Mar 18 '19 at 06:18
  • is this the release version you are trying or development version ? if development is metro packager bundle terminal started when you run the command ? – warl0ck Mar 18 '19 at 06:20
  • Its the development version i am trying to build and yes metro package bundler starts correctly but got stuck at "Loading dependency graph..." – Ehsan Mar 18 '19 at 06:24
  • I had the same issue , this link removed my problem : https://stackoverflow.com/questions/55441230/unable-to-load-script-make-sure-you-are-either-running-a-metro-server-or-that-yo/59022921#59022921 – Abolfazl Roshanzamir Nov 24 '19 at 22:13

3 Answers3

8

You need to change your target sdk to 27 instead of 28 in your project level build.gradle. From Android P(28), Google ban the use of http.

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Cà phê đen
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Coldsparkle
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  • Have tried it now with sdk 27, still throwing the same error. – Ehsan Mar 18 '19 at 15:07
  • @Ehsan - did you run gradle clean and resync your gradle files after the change to the sdk target? – powerup7 Mar 18 '19 at 22:19
  • @powerup7 yes, have cleared the gradle cache and other stuff but it is still showing the same error. I also created a new RN project just to test and it throws the same error. There seems to be some issue with 0.59 version – Ehsan Mar 19 '19 at 04:28
  • @Ehsan trying running `npm run start --reset-cache` to clear your cache. If it doesn't work then you need to bundle an bundle file for android offline. – powerup7 Mar 20 '19 at 00:46
  • I encountered the same issue... did anyone solved it ? using 0.59.1 – Arigui Ahmed Mar 20 '19 at 14:12
  • Is this resolved ? I am also getting the same error. React native version that I am using is 0.59.3. – TheHound.developer Apr 04 '19 at 09:40
  • Follow this link and add ANDROID_HOME properly. It will work. https://stackoverflow.com/questions/26356359/error-android-home-is-not-set-and-android-command-not-in-your-path-you-must – TheHound.developer Apr 04 '19 at 10:45
0

I had this same issue using genymotion and then I realized that the emulator was offline, and that's why it couldn't connect to the metro server.

Tino
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0

"react-native": "0.64.1",

I used other solution but I've resolved this issue in other way, with changing bundleInDebug: true, in project.ext.react in android > app > build.gradle.

project.ext.react = [
bundleInDebug: true,
enableHermes: ***,

]

Mahmonir Bakhtiyari
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