React Native project, sometimes getting 'connect ECONNREFUSED 127.0.0.1:19001' using expo start

Question

I'm using expo-cli 2.6.14, react-native 0.57.1, Expo SDK 31.0.0. In order to start the project to run on the Expo app, I use expo start. Sometimes it works, sometimes I get an error and I have no idea why. If I just keep running expo start over and over again, eventually it will work, but that's a lot of wasted time.

This is the error that I get:

Could not get status from Metro bundler. connect ECONNREFUSED 127.0.0.1:19001
Connecting to Metro bundler failed.
Set EXPO_DEBUG=true in your env to view the stack trace.
error Command failed with exit code 1.

I'm not sure why this happens. I've been ignoring it since it doesn't happen consistently, but it's become a nuisance. Any thoughts on what the issue might be?

Edit: This is a known issue that still has not been fixed.

Edit 2: Still occurring with expo-cli 2.12.2, and Expo SDK 33.0.0

score 64 · Accepted Answer · edited Jan 21 '19 at 19:54

64

I faced this issue too, here is what I did finally:

First try to use "expo start -c" to clear the cache when launching, this is the option that works every time.

Try to delete your .expo folder if it doesn't work and retry.

edited Jan 21 '19 at 19:54

Zaytri

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answered Jan 09 '19 at 22:04

amir_muerte

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In case this solution does not work, I have posted an alternative solution. – Zaytri Jul 19 '19 at 16:43

score 7 · Answer 2 · edited Jul 19 '19 at 12:42

7

For whatever reason, this is the solution that works almost 100% of the times for me.

expo start
Ctrl + C
expo start

edited Jul 19 '19 at 12:42

fedorqui

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answered Jul 04 '19 at 00:04

Zaytri

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score 7 · Answer 3 · edited Mar 18 '22 at 14:08

7

I followed below steps:

Run expo start
Ctrl + c
Delete .expo folder in your project directory
Run expo build:android -c

⚠️expo build:android will be discontinued on January 4, 2023⚠️

edited Mar 18 '22 at 14:08

Maifee Ul Asad

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answered Dec 24 '19 at 15:18

user3016257

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score 6 · Answer 4 · answered Oct 28 '19 at 22:35

6

Try removing the .expo directory from the project root.

answered Oct 28 '19 at 22:35

Idan

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score 2 · Answer 5 · answered Jul 03 '19 at 00:02

2

I was getting the same error. I resolved it by deleting the .expo folder in the root of my project

answered Jul 03 '19 at 00:02

Colyn Brown

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score 2 · Answer 6 · answered Jul 29 '19 at 12:51

2

First of all you have to start expo

expo start and after build your project

expo publish

use this two command it is worked for me.

answered Jul 29 '19 at 12:51

2

thanks Dynamic Methods. my problem is solved by using this – Lalabhai Patel Jul 29 '19 at 12:57
Thanks For your valuable Feedback. – Jul 29 '19 at 13:08
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The issue was that `expo start` itself wasn't working – Zaytri Jul 29 '19 at 16:43
@zaytrix Your Project is expo detached Project?? if not then use exp start otherwise you can use this two command. – Jul 30 '19 at 07:10
I have to face this problem when I was building my project in iOS that time I got this error and I have used these two command and it is working for me – Aug 01 '19 at 13:36

Ayushi Jain · Answer 7 · 2019-09-14T04:11:28.650

I have recently created an app in react-native and I used command "expo build-android" for creating the Android APK.It even worked for me most of the times but not always, so the solution I used is (might be helpful to someone else) -

Run command "npm install -g expo-cli" and this throws an error - "expo is unrecognised as internal and external commands"
Search for "environment variables”(Press windows key to search on Windows OS) and add a new path to system variables "C:\Users\test\AppData\Roaming\npm" you might have different folder at the place of "test", use that here.
Run "npm install -g expo-cli" and it should work fine.
Run "expo build:android" if it still gives the same error then run 3 commands in command prompt (now go to the project path then run these 3 commands one after another) step-1: expo start step-2: ctrl+c (to stop it) step-3: expo build:android It’s not clear to me as to why this works and how I came to this solution but its working.

score 0 · Answer 8 · answered May 13 '19 at 03:58

Also, check what 19xxx ports are being used by what applications. You can do so by running 'expo start -c' from one terminal and run 'netstat' and 'lsof' commands from another terminal. You can kill other processes if they're using any of 19xxx ports.

HTH,

score 0 · Answer 9 · answered Dec 11 '19 at 15:32

0

Specific situation but I found out that Laravel Valet running in the background was causing me to consistently get the ECONNREFUSED 127.0.0.1:19001 error.

Running valet stop before expo start seemed to fix it.

answered Dec 11 '19 at 15:32

brianjohnhanna

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score 0 · Answer 10 · edited Mar 21 '20 at 09:23

0

Open a new terminal.
Write ipconfig, you'll get IP4 address like: 192.168.........
Copy this address and run this:
set REACT_NATIVE_PACKAGER_HOSTNAME=(paste you ip4 address here)
Now run: expo start
Open split terminal and run: expo build:android

Happy coding :)

edited Mar 21 '20 at 09:23

סטנלי גרונן

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answered Mar 21 '20 at 08:50

Rafay Mustafa

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score 0 · Answer 11 · answered Apr 09 '20 at 13:20

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Delete your .expo folder as it is recommended in the expo documentation

Worked very well for me.

answered Apr 09 '20 at 13:20

Cyril

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score 0 · Answer 12 · answered May 20 '20 at 08:09

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run #rm -rf .expo in your project folder

answered May 20 '20 at 08:09

Eric

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score 0 · Answer 13 · answered Jun 08 '20 at 03:27

Adding some additional info...

Like others stated, I tried doing the expo start then ctrl+c. It seemed to work at first, but then my build failed with

EPERM: operation not permitted, rename 'mypath\.expo\packager-info.json.1807243929' -> 'mypath\.expo\packager-info.json'

So then I removed .expo like the others and then my build worked.

score 0 · Answer 14 · answered Jul 28 '20 at 16:54

0

Just delete the .expo file from your root directory of the project and run the command Don't Touch The .expo-shared file

expo android:build

answered Jul 28 '20 at 16:54

Soumyadeep Mondal

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score 0 · Answer 15 · answered Oct 03 '20 at 13:41

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In my case worked when I closed another process.

make sure you don't have antoher process running in the same port, it worked for me.

answered Oct 03 '20 at 13:41

OscarGM10176

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score 0 · Answer 16 · answered Jan 02 '21 at 02:49

An alternative to solving problems like this is to find out what is using the port in question.

Try on Windows

netstat -o -n -a | findstr 127.0.0.1:19001

In the last column it will show a PID code, write it down.

Press Windows + R and type

taskmgr

The task manager will open, go to the service area and look for the PID you wrote down earlier and when you find it, end the process.

After that try to run a build.

React Native project, sometimes getting 'connect ECONNREFUSED 127.0.0.1:19001' using expo start

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