spawnSync ./gradlew EACCES error when running react native project on emulator

Question

I am trying to use react-native run-android to install my react-native application on an android studio emulator. I have checked with abd-devices that the emulator is available, and I have ran npm-install.

I am using Ubuntu 18.04 with the latest version of android studio, and the latest Pixel 2 XL API 28.

I get the following error:

spawnSync ./gradlew EACCES

Error: spawnSync ./gradlew EACCES
    at Object.spawnSync (internal/child_process.js:998:20)
    at spawnSync (child_process.js:622:24)
    at Object.execFileSync (child_process.js:650:13)
    at runOnAllDevices (/home/user/react/front-end/project/node_modules    /react-native/local-cli/runAndroid/runAndroid.js:299:19)
    at buildAndRun (/home/user/react/front-end/project/node_modules/react-native/local-cli/runAndroid/runAndroid.js:135:12)
    at isPackagerRunning.then.result (/home/user/react/front-end/project/node_modules/react-native/local-cli/runAndroid/runAndroid.js:65:12)
    at processTicksAndRejections (internal/process/next_tick.js:81:5)

I have tried restarting my PC and the emulator several times. Any ideas?

UPDATE: I reinstalled JDK, npm, react-native-cli and android studio. It still gives me the exact same error. Please help.

Have you tried increasing the count of your inotify watchers? https://github.com/guard/listen/wiki/Increasing-the-amount-of-inotify-watchers — Andrew, Feb 05 '19 at 19:51
problem is not specific to emulator usage, affects any unix-derived system (tested on Linux, macOS, Windows) works fine on Windows because file modes/ACLs are not relevant on Windows platform. this could be addressed within the rn git repo itself, in that regard accepted answer is a workaround. — Shaun Wilson, Apr 03 '21 at 21:51

score 667 · Accepted Answer · edited Oct 29 '19 at 12:49

667

I fixed this problem with:

chmod 755 android/gradlew

the chmod command sets the permissions of files or directories. https://www.computerhope.com/unix/uchmod.htm

edited Oct 29 '19 at 12:49

TheEhsanSarshar

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answered Mar 05 '19 at 16:13

Jinkey

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fixed the problem successfully. But it would be nice if you explain what it does. Would've been useful to many people i think. – AL-zami May 06 '19 at 05:06
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@Grez.Kev this command makes gradlew files into executable. Which help code to give a run. This solution saves my hours. Thnx – Chander Shakher Ghorela - Guru May 10 '19 at 19:02
My right relative path is platforms/android/gradlew and it works – A. D'Alfonso May 27 '19 at 09:41
2

I do not have gradlew directory under my android dir, what sould I do? – JollyRoger Sep 01 '19 at 12:39
chmod 755 - 755 means read and execute access for everyone and also write access for the owner of the file. – Kailash Uniyal Oct 24 '20 at 08:56
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@BlueBot `gradlew` is not a directory. It's a file (gradle wrapper) that is part of your project. – Nathan Getachew Jan 07 '21 at 07:33
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This definitely worked. But just wondering why this wasn't taken as a precaution for React Native development or mentioned in the docs... – 6rchid Oct 25 '21 at 00:37
In monorepo projects you should be run it in mobile folder or change command to `chmod 755 packages/mobile/android/gradlew ` – Hossein Mohammadi Dec 21 '21 at 21:14
@jinkey This command didn't work for me, I use mac Catalina 10.15.7 – Mohamad reza1987 Jun 09 '22 at 04:13
Worked for me on an early 2015 MacBook Air running macOS Monterey. – Vicktor Apr 08 '23 at 07:20

Omar Al-Howeiti · Answer 2 · 2023-07-21T09:33:41.563

74

gradlew file permissions should be updated, you can resolve it by changing the permission, run the following command

chmod 755 android/gradlew

it will give (read,write,execute) permission for the user(owner), also (read, execute) for group and other users.

edited Jul 21 '23 at 09:33

answered Feb 14 '19 at 10:07

Omar Al-Howeiti

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score 18 · Answer 3 · edited Feb 02 '23 at 18:00

18

It turns out that It's not gradle but it's android/gradlew. run the below command inside the root directory:

$ chmod +x android/gradlew

Now run

$ yarn android            
# OR   
$ npm run android 
# OR
$ npx react-native run-android

You should be good to go.

edited Feb 02 '23 at 18:00

Mr_Green

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answered Oct 30 '21 at 04:37

Ericgit

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Lakshan Mamalgaha · Answer 4 · 2020-06-30T10:24:45.820

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I tried the above solution.but in my case I had to use sudo because of the permission issue. You can resolve it by running the command

sudo chmod 755 android/gradlew

edited Jun 30 '20 at 10:24

answered Aug 23 '19 at 05:25

Lakshan Mamalgaha

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Can you explain why you don't use the same path as in the other answers? – Nico Haase Aug 23 '19 at 05:58

score 2 · Answer 5 · edited Jun 21 '21 at 05:04

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On the first approved answer from @Jinkey, in case you are wondering where to run this command, like in my case on Mac, follow these steps:

In your terminal navigate to your project folder cd <project folder>, make sure the path to your project is correct.
Then once in the folder, run the command by copying and pasting as is chmod 755 android/gradlew

edited Jun 21 '21 at 05:04

Dharman

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answered Jun 21 '21 at 04:58

Nicholas Mberev

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score 1 · Answer 6 · answered Nov 29 '22 at 12:19

Go to the react native cli project directory then run this command below :

sudo chmod 755 android/gradlew

then run the command:

npx react-native run-android

then start the metro (if it is not started automatically) by following command:

npx react-native start

score 0 · Answer 7 · edited Apr 05 '21 at 05:07

0

On MacBook Air M1 chip chmod 755 android/gradlew works great. Also add the below line in the android/local.properties file.

sdk.dir = /Users/YourUserNAME/Library/Android/sdk

edited Apr 05 '21 at 05:07

karel

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answered Apr 04 '21 at 08:30

C Baraliya

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score 0 · Answer 8 · answered Oct 09 '22 at 14:41

0

sudo chmod 755 android/gradlew works perfectly fine for this issue in mac!

answered Oct 09 '22 at 14:41

Vishwanath

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score -1 · Answer 9 · answered Feb 27 '23 at 10:15

-1

FIXED

Just run this:

sudo chmod 755 android/gradlew

answered Feb 27 '23 at 10:15

ahmnouira

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This has already been mentioned in other answers, such as [this one](https://stackoverflow.com/a/74005690/2227743). – Eric Aya Mar 01 '23 at 09:34

spawnSync ./gradlew EACCES error when running react native project on emulator

9 Answers9

FIXED

Linked