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npm ERR cb() never called

I have a Node.js app hosted on Heroku. Every time I do a git push heroku I get the following error:

Counting objects: 14, done.
Delta compression using up to 6 threads.
Compressing objects: 100% (12/12), done.
Writing objects: 100% (12/12), 1.20 KiB, done.
Total 12 (delta 8), reused 0 (delta 0)

-----> Node.js app detected
-----> Resolving engine versions
       Using Node.js version: 0.6.20
       Using npm version: 1.2.12
-----> Fetching Node.js binaries
-----> Vendoring node into slug
-----> Installing dependencies with npm
       npm http GET https://registry.npmjs.org/pg/0.6.15
       npm http GET https://registry.npmjs.org/socket.io
       npm http 200 https://registry.npmjs.org/pg/0.6.15
       npm http GET https://registry.npmjs.org/pg/-/pg-0.6.15.tgz
       npm http 200 https://registry.npmjs.org/socket.io
       npm http GET https://registry.npmjs.org/socket.io/-/socket.io-0.9.13.tgz
       npm http 200 https://registry.npmjs.org/pg/-/pg-0.6.15.tgz
       npm http 200 https://registry.npmjs.org/socket.io/-/socket.io-0.9.13.tgz
       npm http GET https://registry.npmjs.org/socket.io-client/0.9.11
       npm http GET https://registry.npmjs.org/policyfile/0.0.4
       npm http GET https://registry.npmjs.org/base64id/0.1.0
       npm http GET https://registry.npmjs.org/redis/0.7.3
       npm http GET https://registry.npmjs.org/generic-pool/1.0.9
       npm http 200 https://registry.npmjs.org/policyfile/0.0.4
       npm http GET https://registry.npmjs.org/policyfile/-/policyfile-0.0.4.tgz

       npm http 200 https://registry.npmjs.org/base64id/0.1.0
       npm http GET https://registry.npmjs.org/base64id/-/base64id-0.1.0.tgz
       npm http 200 https://registry.npmjs.org/generic-pool/1.0.9
       npm http GET https://registry.npmjs.org/generic-pool/-/generic-pool-1.0.9
.tgz
       npm http 200 https://registry.npmjs.org/socket.io-client/0.9.11
       npm http GET https://registry.npmjs.org/socket.io-client/-/socket.io-clie
nt-0.9.11.tgz
       npm http 200 https://registry.npmjs.org/redis/0.7.3
       npm http GET https://registry.npmjs.org/redis/-/redis-0.7.3.tgz
       npm http 200 https://registry.npmjs.org/policyfile/-/policyfile-0.0.4.tgz

       npm http 200 https://registry.npmjs.org/base64id/-/base64id-0.1.0.tgz
       npm http 200 https://registry.npmjs.org/generic-pool/-/generic-pool-1.0.9
.tgz
       npm http 200 https://registry.npmjs.org/socket.io-client/-/socket.io-clie
nt-0.9.11.tgz
       npm http 200 https://registry.npmjs.org/redis/-/redis-0.7.3.tgz

       > pg@0.6.15 install /tmp/build_36us8733h7kkr/node_modules/pg
       > node-waf configure build || (exit 0)

       Checking for program g++ or c++          : /usr/bin/g++
       Checking for program cpp                 : /usr/bin/cpp
       Checking for program ar                  : /usr/bin/ar
       Checking for program ranlib              : /usr/bin/ranlib
       Checking for g++                         : ok
       Checking for node path                   : not found
       Checking for node prefix                 : ok /tmp/node-node-nNUw
       Checking for program pg_config           : /usr/bin/pg_config
       'configure' finished successfully (0.058s)
       Waf: Entering directory `/tmp/build_36us8733h7kkr/node_modules/pg/build'
       [1/2] cxx: src/binding.cc -> build/Release/src/binding_1.o
       [2/2] cxx_link: build/Release/src/binding_1.o -> build/Release/binding.no
de
       Waf: Leaving directory `/tmp/build_36us8733h7kkr/node_modules/pg/build'
       'build' finished successfully (0.492s)
       npm http GET https://registry.npmjs.org/uglify-js/1.2.5
       npm http GET https://registry.npmjs.org/ws
       npm http GET https://registry.npmjs.org/xmlhttprequest/1.4.2
       npm http GET https://registry.npmjs.org/active-x-obfuscator/0.0.1
       npm http 200 https://registry.npmjs.org/active-x-obfuscator/0.0.1
       npm http GET https://registry.npmjs.org/active-x-obfuscator/-/active-x-ob
fuscator-0.0.1.tgz
       npm http 200 https://registry.npmjs.org/uglify-js/1.2.5
       npm http GET https://registry.npmjs.org/uglify-js/-/uglify-js-1.2.5.tgz
       npm http 200 https://registry.npmjs.org/xmlhttprequest/1.4.2
       npm http GET https://registry.npmjs.org/xmlhttprequest/-/xmlhttprequest-1
.4.2.tgz
       npm http 200 https://registry.npmjs.org/ws
       npm http GET https://registry.npmjs.org/ws/-/ws-0.4.25.tgz
       npm http 200 https://registry.npmjs.org/active-x-obfuscator/-/active-x-ob
fuscator-0.0.1.tgz
       npm http 200 https://registry.npmjs.org/uglify-js/-/uglify-js-1.2.5.tgz
       npm http 200 https://registry.npmjs.org/xmlhttprequest/-/xmlhttprequest-1
.4.2.tgz
       npm http 200 https://registry.npmjs.org/ws/-/ws-0.4.25.tgz
       npm http GET https://registry.npmjs.org/zeparser/0.0.5
       npm http GET https://registry.npmjs.org/commander
       npm http GET https://registry.npmjs.org/tinycolor
       npm http GET https://registry.npmjs.org/options
       npm http 200 https://registry.npmjs.org/zeparser/0.0.5
       npm http GET https://registry.npmjs.org/zeparser/-/zeparser-0.0.5.tgz
       npm http 200 https://registry.npmjs.org/options
       npm http GET https://registry.npmjs.org/options/-/options-0.0.3.tgz
       npm http 200 https://registry.npmjs.org/tinycolor
       npm http GET https://registry.npmjs.org/tinycolor/-/tinycolor-0.0.1.tgz
       npm http 200 https://registry.npmjs.org/commander
       npm http GET https://registry.npmjs.org/commander/-/commander-0.6.1.tgz
       npm http 200 https://registry.npmjs.org/zeparser/-/zeparser-0.0.5.tgz
       npm http 200 https://registry.npmjs.org/options/-/options-0.0.3.tgz
       npm http 200 https://registry.npmjs.org/tinycolor/-/tinycolor-0.0.1.tgz
       npm http 200 https://registry.npmjs.org/commander/-/commander-0.6.1.tgz

       > ws@0.4.25 install /tmp/build_36us8733h7kkr/node_modules/socket.io/node_
modules/socket.io-client/node_modules/ws
       > (node-gyp rebuild 2> builderror.log) || (exit 0)

       make: Entering directory `/tmp/build_36us8733h7kkr/node_modules/socket.io
/node_modules/socket.io-client/node_modules/ws/build'
         CXX(target) Release/obj.target/bufferutil/src/bufferutil.o
         SOLINK_MODULE(target) Release/obj.target/bufferutil.node
         SOLINK_MODULE(target) Release/obj.target/bufferutil.node: Finished
         COPY Release/bufferutil.node
         CXX(target) Release/obj.target/validation/src/validation.o
         SOLINK_MODULE(target) Release/obj.target/validation.node
         SOLINK_MODULE(target) Release/obj.target/validation.node: Finished
         COPY Release/validation.node
       make: Leaving directory `/tmp/build_36us8733h7kkr/node_modules/socket.io/
node_modules/socket.io-client/node_modules/ws/build'
       npm ERR! cb() never called!
       npm ERR! not ok code undefined
       npm ERR! cb() never called!
       npm ERR! not ok code 1
 !     Failed to install --production dependencies with npm
 !     Heroku push rejected, failed to compile Node.js app

To git@heroku.com:still-chamber-1286.git
 ! [remote rejected] master -> master (pre-receive hook declined)
error: failed to push some refs to 'git@heroku.com:still-chamber-1286.git'

The error is in the last few lines:

npm ERR! cb() never called!
           npm ERR! not ok code undefined
           npm ERR! cb() never called!
           npm ERR! not ok code 1
     !     Failed to install --production dependencies with npm
     !     Heroku push rejected, failed to compile Node.js app

    To git@heroku.com:still-chamber-1286.git
     ! [remote rejected] master -> master (pre-receive hook declined)
    error: failed to push some refs to 'git@heroku.com:still-chamber-1286.git'

I have had no problems with pushing my code to Heroku before; only since Monday have I had this error.

I have seen similar posts on the web referring to slightly different errors, but haven't seen one with ! [remote rejected] master -> master (pre-receive hook declined) before.

I'm getting the same error when pushing my node app to heroku today: ! [remote rejected] master -> master (pre-receive hook declined)
Strangely, adding "engines": { "node": "0.8.x" } to my package.json fixed that error for me.
It worked, thanks a lot :) Although it should be noted that I already had "engines": { "node": "0.6.x" } in package.json, I simply had to change it from 0.6.x to 0.8.x
There is currently an open issue about this error with npm and node 0.10.0: github.com/isaacs/npm/issues/2907
I fixed this for myself by simply updating npm ( $> npm install -g npm )since I was getting warnings that packages expected a higher version of it anyways in the console output.

M
MAZux

If you have npm version 5 or above, try this first:

$ sudo npm cache verify

Otherwise:

$ sudo npm cache clean

My node and npm versions are:

$ node -v
v0.10.0

$ npm -v
1.2.14

https://docs.npmjs.com/cli/cache


Workaround helped, but for the same error but during module installation (grunt-contrib-yuidoc), thanks.
Isn't this solution for local runs and not on Heroku? For Heroku this solution seems does not work.
Got this error after building a postgres native extension, rm -fr $HOME/.node-gyp do the trick.
I got the error when trying to install cordova. I did the cache clean method and tried the install again and it worked. Thanks alot.
T
Thomas Grainger

For anyone hitting this page around Sept 29th, 2013, there's a closed bug in Node.js 0.10.19 which is causing this error.

https://github.com/isaacs/npm/issues/2907#issuecomment-15215278 https://github.com/joyent/node/issues/6263#issuecomment-25113849

If you're on Heroku you should upgrade to 0.10.20

"engines": {
    "node": "0.10.20"
}

Thanks. I am trying to build rippled and ran into this exact error. Your answer helped. (Note: it seems that re-running the command multiple times eventually gets it to succeed. In my case it was "npm install")
Having the same problem. (npm ERR! cb() never called!) running Node 0.1.19/NPM 1.3.11. Im trying to install cordova with "sudo npm install -g cordova"
Not sure if it applies. But when trying to install (wintersmith) with -g it failed with this error. If I first installed without the global option, and then installed with it, I did not get the error.
I had this very error yesterday, and re-installed node today (Oct 1st) and it's working again - it seems to be fixed in v0.10.20. Thanks for this thread, saved me a lot of time.
I had the same error in v0.10.36. Updated to v0.12.3 and fixed.
M
Marwan Salim

Try

sudo npm cache clean --force

More info refer: https://reactgo.com/npm-err-cb-never-called/


To anyone trying this, I was doing this in my local Angular project directory (VS code terminal) and 'sudo' did not work. However, using just npm cache clean --force worked for me in my local instance and resolved this error message. Thanks!
Still working fine as of end 2021
C
Cristik

If you have updated angular cli, npm, node, you don't need to do anything more. Just run the command below to resolve the issue. This command also resolves the issue of "unexpected end of line".

npm install --no-package-lock

run this command in the same workspace where you are working.
work perfect! it help me and save my morning
c
codewithfeeling

IMPORTANT! The solution below is now regarded as unstable, and you should use Node Version Management instead: Node Version Manager on Github. David Walsh also has a good introduction to NVM. NVM works beautifully and I've been using it to manage legacy WordPress projects for a few years.

Please don't use this - use NVM

I just had this exactly issue when trying to install the Sage theme for WordPress. When I ran npm install on the theme directory, it failed.

Looking in the dependencies in package.json, I could see that the engine I was running for Node was out of date. Running node -v on the command line showed that I was on v0.10.9, and the latest version of Sage requires >= 0.12.0

So here's the fix for that. These steps are from David Walsh's blog

Clear your npm cache: sudo npm cache clean -f Install the latest version of the Node helper: sudo npm install -g n Tell the helper (n) to install the latest stable version of Node: sudo n stable

You should then get a progress display, after which you will be up to date.

When I ran npm install after doing this, everything worked fine, and I was able to run gulp to build the initial dist directory.


Step 2 should be sudo npm install -g n as well.
According to your source link, this solution is "unstable" and Node Version Manager is better github.com/nvm-sh/nvm/blob/master/README.md
A
Aidan Feldman

Do you have a specific version of "npm" specified under "engines" in your package.json? Sounds like NPM v1.2.15 resolved the issue (and Heroku has available). I was getting the same problem with "1.1.x".


Fantastic. That was bugging me for sure. Specified my npm version and it worked like a charm.
IF YOU ARE EVER IN AUSTIN,TX, PLEASE LET ME BUY YOU A PIZZA! I'm sorry for the all caps, but it captures my current state of joy as a result of your answer. I would never have suspected that having that version specification for NPM was the culprit. Aidan, I hope you have a wonderful day.
@juanpaco, you are too funny.
Yeach I remove this "engines" sheet from package.json and it works :)
S
Shujat Munawar

Run npm install -g npm

Then run npm install


Doesn't work when npm throws cb() never called!.
S
Srinivas

Updating the NodeJS https://nodejs.org/en/ Fixed My Issue.

Run npm install -g npm & npm cache clean


Yes. Actually it worked this way for me. First I updated my Node & run those commands it worked. May be another way of getting it worked. Hope it helps some one.
I have just updated node.js only. It worked
B
Bubiec

For me none of the above solutions worked (reinstalling, clearing cache, folders etc.).

My problem was solved with:

npm config set registry https://registry.npmjs.org/

I had to use HTTP instead of HTTPS npm config set registry https://registry.npmjs.org/
J
James Christian Kaguo

UPDATED: The problem is pretty common here is the new fix npm cache verify run that you will be good to go!


Don't know what was the exact problem, but this solution worked for me. Thanks!
I faced this issue with npm version: 6.14.14 node version: v14.17.5 and above solution worked! Thanks :-)
S
Sen Jacob

I had the same problem while installing ionic@beta. I tried the following items and they didn't help me.

npm cache clean Manually delete cache from %temp%\npm-* Command prompt "Run As Administrator"

I solved the problem by installing node-v5.10.1-x64.msi (Previous version was node-v5.9.0-x64.msi) and run an npm cache clean before installing ionic@beta

It worked!


This worked for me, thanks! Must be something wrong with 5.9.x.
Installing node may have installed a new npm, which could be the cause of this working as a fix.
J
Just Shadow

Since NPM 6 you can do a clean install. That was the only solution which worked for me.

Just run the following:

npm clean-install

Notes:

You might also manually remove the node_modules folder and try again in case the command above failed.

If still doesn't work, the global cache might be broken, try running npm cache clean --force and then do a clean install.

The clean-install command works on npm 6 and above. For older versions consider checking the other answers below.


Working!! npm should suggest such solutions along with the error like git does. npm just throws fatal error...
B
BuZZ-dEE

[Works] try

npm config delete https-proxy

it would have conflicted with proxy.


S
Sven Viking

I had the same problem with NPM version 1.3.11, and solved it simply by re-running the exact same command multiple times ("npm update -g" in my case). The error popped up for a different package on each subsequent run and eventually everything updated successfully.

For me at least, it seems like it was being caused by a network issue (corrupted downloads). I was also getting an error about an invalid package, which I was able to resolve by deleting all instances of "tmp.tgz".

Edit: (Probably unrelated, but in case this helps anyone: I was using Windows, and started a command prompt as an Administrator after receiving the initial error).


Since posting this I've seen a lot of people saying they've had the same experience on Unix and Mac (multiple attempts eventually bypass the issue). Don't know if the problem is networking related or not, but it seems widespread.
Apparently this bug is now fixed in v0.10.20: blog.nodejs.org/2013/09/30/node-v0-10-20-stable
T
Tim Biegeleisen

I had the cb() never called! error, and none of the answers here directly worked for me. I was running Node v8.11.2, and I had to manually delete the package-lock.json file to get anywhere. After doing this, I ran npm cache verify per what some of the answers recommended. Then, running npm i yielded the following result:

npm notice created a lockfile as package-lock.json. You should commit this file.
npm WARN securities-stub@1.0.0 No description
npm WARN securities-stub@1.0.0 No repository field.

up to date in 5.118s

O
Obiwahn

As of March 2021 the new NPM version fixes many of those issues.

So calling npm i -g npm@latest fixes this again (In between this did not work).


what was your latest version when you did this?
Sorry. I don't remember.
M
Malith Senanayake

If the bug persists even after running npm cache clean --force, try to rerun npx create-react-app your_app_name after switching to a different network. This error could also cause due to slow and unstable networks...


A
Akash Tantri

I just globally installed the newest version of NPM and it worked for me. I guess Clearing npm cache is optional.

npm install -g npm

F
Flion

For me on npm 6.4.0 and node 10.9.0 none of the answers worked. Reinstalled node, npm, cleaned cache, removed folders ...

After some debugging it turned out I used npm link for two of my modules under development to link to each other. Once I removed and redid some linking I was able to get it all working again.


B
BuZZ-dEE

Knowing that this is an old question and many of you had provided your answers. Just to share my experience with this error and how I fixed.

This all started after I upgrade my Node version to > 12, I did go through all the answers and try to follow steps clearing npm Cache, deleting the node_modules folder. No one of them resolve my problem.

The root cause in my case was proxy restricting installation. I deleted the proxy settings to fix the problem.

Check if you have any proxy config npm config list Delete them by npm config delete proxy npm config delete http-proxy npm config delete https-proxy Now try npm install


j
joe hoeller

What worked for me was: delete the package-lock.json file and run the following command:

npm cache clean --force


h
h--n

sudo npm cache clean didn't work out for me. Update to the latest version of node helps.

I had node v.5.91 and updated to v6.9.1


it seems like a returning problem, I had the same problem with 10.15.0 and 11.6.0, and I had to downgrade 9.11.2, it worked.
h
halloleo

I suggest: Switch to Yarn! - Yarn is a package manager which uses the same package.json file and node_modules folder as npm.

With npm I had the same problem: On a CentOS 6 install I got the ERR cb() never called error repeatedly and could not find a way to make npm reliably complete installation of some packages (like webpack for example). - Yarn works flawlessly, even on flaky network connections.

Migration to Yarn is easy. Most subcommands are the same. They have a good Migration guide. Read on to the handy CLI commands comparison at the end.


I've often had problems with npm install inside a Docker container (typically running on an Ubuntu host). yarn install has unblocked me in two different projects when npm install has failed! Wish I could know why, however...
Yes, I can confirm I had no problems with Yarn. Unfortunately npm is a crap nowadays. Package lock file generation is broken in some random moments. Nothing like that happens in Yarn. Its yarn.lock file is always fine
K
Kacpers

I have the same error in my project. I am working on isolated intranet so my solution was following:

run npm clean cache --force

delete package-lock.json

in my case I had to setup NPM proxy in .npmrc


S
SUMIT JAIN

Try switching your network, somehow switching network worked for me.

I have tried many things mentioned in other answers, like:

npm cache clean --force Delete existing node_modules, delete package-lock.json, and reinstall using - npm i npm cache verify npm clean-install

None of the above worked for me, might work for you. Try your luck.


R
Robert Johnson

It appears that particular dependency versions can cause this issue. For example, gulp-uglifycss 1.0.7 has this problem (see https://github.com/rezzza/gulp-uglifycss/issues/15).

If you are allowing major or minor version updates in your packages.json via ^ or ~, remove those characters thoughout the file and try another npm install. If it works that time then you'll be alright after you have the fun of narrowing down which package is causing the problem.


B
Benja

I had the same issue while trying to install firebase-tools in my windows laptop. this is how i solved it.

I downloaded kaspersky and installed it. then i disabled kaspersky secure connections i opened cmd and run this command npm cache clean --force i then run this command npm install npm@latest -g i then run the firebase cli command npm install -g firebase-tools


in this command npm cache clean --force --force helped to clean cache
@Benja - Kaspersky is an anti virus and it has nothing to do in your installation or issues of NPM. if you have issues with that, at max it can be for Proxy settings , or for any one of the reasons mentioned here
J
Jaymeen_JK

For Ubuntu Users, the given below method worked for me.

Firstly, perform this : sudo npm cache verify

Then go to Home->.npm and delete the _cache folder by : sudo rm -rf _cacache/

go and check, maybe you found the solution.


B
BuZZ-dEE

I too faced the same problem today as I force stopped the npm package download in between due to internet issues.

I tried various things like,

Running sudo npm cache clean -f - which did not work as expected Clean uninstalling node and reinstalling it - which as well didn't work

I finally tried to delete the folder containing the npm cache that was creating the problem. I ran the following command,

sudo rm -rf /Users/{user_system_user}/.npm/

Then I tried installing the package that was stuck and everything worked like a charm.

P.S: replace {user_sytem_user} according to the current user of your system.


I think with the latest npm versions, your solution is the only one that is working.
Yeah I tried a bunch of other things but yours was the one that sealed the deal
R
Rumesh Madushanka

If you are open your code in a IDE such as IntelliJ idea Close it and re try