git, Heroku: pre-receive hook declined

Question

I am in the process of setting up a git repository and attempting to link it to Heroku. When I run the command

git push heroku master

I receive

Counting objects: 7, done.
Delta compression using up to 2 threads.
Compressing objects: 100% (5/5), done.
Writing objects: 100% (7/7), 714 bytes, done.
Total 7 (delta 1), reused 0 (delta 0)

-----> Heroku receiving push

 !     Heroku push rejected due to an unrecognized error.
 !     We've been notified, see http://support.heroku.com if the problem persists.


To git@heroku.com:morning-stream-3712.git
 ! [remote rejected] master -> master (pre-receive hook declined)
error: failed to push some refs to 'git@heroku.com:morning-stream-3712.git'

I'm not quite sure what other information would be helpful and what will just muddy the waters, so I'll just leave it at this for now. Any help getting my application pushed to Heroku would be greatly appreciated. Thanks.

Answer 1

Make sure you are pushing a repo that contains a proper supported app ( Rails, Django etc.) and you are not just pushing some random repo to test it out.

Newbie in Heroku: Error when push my app to Heroku

If that is not the case and you are pushing what you think is a valid app, contact Heroku support and they will fix it for you.

Answer 2

Make sure that you are using either npm or yarn.lock file-

Two different lockfiles found: package-lock.json and yarn.lock Both npm and yarn have created lockfiles for this application, but only one can be used to install dependencies.

After deleting yarn.lock and pushing the code again to git, my issue resolved.

Answer 3

删除 package-lock.json 为我解决了它

Answer 4

First, disable collectstatic:

heroku config:set DISABLE_COLLECTSTATIC=1

Then run:

git push heroku master

For more details and full steps, check here .

Answer 5

I faced the same problem:

! [remote rejected] vX.X.XX -> master (pre-receive hook declined) 
error: failed to push some refs to 'git@heroku.com:[application-name]'

I realized that my heroku application Stack is 'cedar-10' and was deprecated from 04/11/2014 and disabled from 04/11/2015 ( Cedar-14 is now Generally Available ).

The solution was to upgrade the heroku application Stack following the guide:

Upgrading the production app to Cedar-14

Answer 6

Another issue could be that in a production environment, you can't use sqlite3 , the default database when you make a rails app.

In order to fix this, just change the database your rails app uses to Postgres. This can easily be accomplished by editing your Gemfile

From your Gemfile, remove:

gem sqlite3;

and add the following:

group :development, :test do
  gem 'sqlite3'
end

group :production do
  gem 'pg'
end

Answer 7

我遇到了同样的问题，但是使用 Django 应用程序，结果发现 pip 无法下载/安装 requirements.txt 文件的依赖项之一（它是 eyeD3）

Answer 8

If you have an error in your css this error can also show up.

In one of my media queries I put

@media screen adn (min-width: 1000px) {

Instead of the "and" which gave me this error.

A good indicator that this may be the case is if you get an error that contains the message

"Tasks: TOP => assets:precompile ... Precompiling assets failed" 

That was my first clue to look in my css.

Answer 9

A little late to the game, one of my issues was I had an outdated sshkey . Just need to update that in the settings.

Another thing was I was pushing Python Django CMS, and it was running python manage.py collectstatic during deploy and it was failing. So make sure you check the log heroku logs --tail . That gave me another hint to turn off collectstatic , it event tells you what to type to turn it off.

Answer 10

I had this problem (same error with Heroku):

To https://git.heroku.com/myapp.git
 ! [remote rejected]   master -> master (pre-receive hook declined)
error: failed to push some refs to 'https://git.heroku.com/myapp.git'

I made some changes to my code and removed some parameters, apparently I missed a simple comma (,) on a line.我对代码进行了一些更改并删除了一些参数，显然我在一行中遗漏了一个简单的逗号（，）。 This caused a build error. Which was not visible in the console upon pushing, only the "pre-receive hook declined" error.

I fixed the comma issue, rebuild and pushed to Heroku and now it works.我修复了逗号问题，重建并推送到 Heroku，现在它可以工作了。

Answer 11

Came across this same error when deploying a node app, but resolved with these two steps and thought I'd share in case anyone else runs into the same issues.

1. Make sure you aren't committing node_modules since heroku installs dependencies from package.json on push. Try adding node_modules/ to your .gitignore to ensure you don't accidentally commit it
2. Heroku uses Node v12 which node-sass 4.10.0 will fail to build with. Try increasing node-sass version by adding the following. This allowed it to build successfully for me:

  "devDependencies": {
    "node-sass": "^4.12.0"
  }

Answer 12

I decided to read the logs line by line. Below is part of the error logs:

remote:        > gbt-ltd-website-frontend@0.1.0 build /tmp/build_c37edf59
remote:        > react-scripts build
remote:        
remote:        Creating an optimized production build...
remote:        Failed to compile.
remote:        
remote:        Cannot read property 'toLowerCase' of undefined
remote:        CompileError: Begins at CSS selector .Styles_hone__1Uuf2
remote:        
remote:        
remote: npm ERR! code ELIFECYCLE
remote: npm ERR! errno 1
remote: npm ERR! gbt-ltd-website-frontend@0.1.0 build: `react-scripts build`
remote: npm ERR! Exit status 1
...
remote: !       Push rejected to gbtstructurals.
remote: 
To https://git.heroku.com/gbtstructurals.git
 ! [remote rejected] master -> master (pre-receive hook declined)
error: failed to push some refs to 'https://git.heroku.com/gbtstructurals.git'

From where the error started, "npm ERR! code ELIFECYCLE" I read up and I found the actual cause of the error. It was a CSS rule. I first removed the rule and it built. Then I checked my declarations and found out I was contradicting myself.

Answer 13

In case if this needs anyone in future even though I am a beginner and doesn't know much about Heroku, you may have requested a version in runtime.txt file which the stack doesn't support.

python-3.8.2 to python-3.8.10

Changing from python-3.8.2 to python-3.8.10 helped me solved it. You may see the supported stacks here: https://devcenter.heroku.com/articles/python-support

Answer 14

I had a similar issue with a recent application after running:

git push heroku master

The error:

remote:  !     Push failed
remote: Verifying deploy...
remote:
remote: !       Push rejected to stormy-escarpment-13653.
remote:
To https://git.heroku.com/stormy-escarpment-13653.git
 ! [remote rejected] master -> master (pre-receive hook declined)

The problem was that I was in the wrong directory when I ran the command. I needed to be in the root of the application. So I ran a git rm --cached <app_name> , to clean up and the ran again and it worked as expected.

Answer 15

i thought , this will not be the error occured due to any app , or code changes. i have same problem now this happen due to the following reason:

• 1) i have code on bitbucket/git i push the code to repository (this repo is linked with the heroku app,meanse changes to this will reflects on heroku)

• 2)after pushing code to repo , i am trying to push code on heroku with "git push heroku master" but due to some reason i abort this command, thats why code is not pushed to heroku

• 3)then i am agian triyng to push code to heroku it says same error
  as above

• 4) the solution for this is "just pull yours last commited code" and push the changes to heroku ..thats it thanks

Answer 16

I had this with a sinatra application. (Heroku does support Sinatra).

The instructions on the heroku blog post were incomplete

https://blog.heroku.com/32_deploy_merb_sinatra_or_any_rack_app_to_heroku

My program ran fine locally but I got that error when trying to push to heroku.

The heroku blogpost didn't include the need to make a gemfile and do bundle install. The program was running locally fine, but to make it work on heroku it needed a Gemfile and bundle install on it.

this link here https://teamtreehouse.com/community/how-can-i-make-my-sinatra-app-public mentioned that I needed a Gemfile, and mentioned the contents of the Gemfile. And then to do bundle install. Then once that is done, then follow the instructions on that heroku blog post, of making the program file, and the config.ru and the git repo and doing heroku create (which also creates the remote), then git push heroku master.

ie

Gemfile as mentioned at treehouse link

# define our source to look for gems
source "http://rubygems.org/"

# declare the sinatra dependency
gem "sinatra" 

And bundle install to install that Gemfile.

bundle install

hello.rb (as mentioned on heroku blogpost)

require 'rubygems'
require 'sinatra'

get '/' do
  "Hello from Sinatra on Heroku!"
end

config.ru

require './hello'
run Sinatra::Application

git

$ git init
Initialized empty Git repository in /Users/adam/hello/.git/
$ git add .
$ git commit -m "sinatra and heroku, two great tastes"
[master (root-commit)]: created 93a9e6d: "sinatra and heroku, two great tastes"
 2 files changed, 9 insertions(+), 0 deletions(-)
 create mode 100644 config.ru
 create mode 100644 hello.rb

heroku create

$ heroku create
Created http://severe-spring-77.heroku.com/ | git@heroku.com:severe-spring-77.git
Git remote heroku added

the push to heroku

$ git push heroku master
Counting objects: 4, done.
Compressing objects: 100% (3/3), done.
Writing objects: 100% (4/4), 385 bytes, done.
Total 4 (delta 0), reused 0 (delta 0)

-----> Heroku receiving push
-----> Verifying repository integrity... done, looks like a Rack app.
       Compiled slug size is 0.1MB
-----> Launching....... done
       App deployed to Heroku

To git@heroku.com:severe-spring-77.git
 * [new branch]      master -> master

Answer 17

对我来说，这是 java app 中未使用的导入，删除了未使用的导入，一切正常。

Answer 18

我的问题是我在推送之前忘记捆绑安装。

Answer 19

In my case I had an npm script called "build" that had the as value npm run build --prefix client .

Heroku automatically executes the npm run build command and it couldn't build my React app. Probably because Heroku didn't install react-scripts module.

So I renamed the command to build-client and now I can push the changes to Heroku.

Answer 20

Checking you config vars (in heroku) may be a good idea.

I had the same error message, when I created a pipeline for my app and wanted to push to the newly created staging app. It didn't work because the config vars I had previously set were not transferred to the new staging app (obviously). After I added the variables once more, pushing to heroku git worked flawlessly again.

Answer 21

Sure you already found the answer, but I'm going to share what worked for me by reading the heroku doc.

we must disable the ' collectstatic ' with

heroku config: set DISABLE_COLLECTSTATIC = 1

and then push main

git push heroku main

Answer 22

The steps which work for me

1: I just remove package-lock.json and yarn.lock 2: user npm install command 3: then push the changes to the github 4: use "git push heroku main" command.

to know more you can visit the below links enter link description here

Answer 23

My issue is that there was one file which I did not add in my previous git commit. The problem was fixed after I added that last file, and pushed another commit.

When I checked the logs, it showed this error:

remote: -----> Build
remote:        Running build
remote:        
remote:        > student-app-frontend@0.1.0 build
remote:        > react-scripts build
remote:        
remote:        Creating an optimized production build...
remote:        Failed to compile.
remote:        
remote:        SassError: File to import not found or unreadable: ../../designUtils/fontDesign.
remote:                on line 2 of src/components/studentCard/StudentCard.scss
remote:        >> @import '../../designUtils/fontDesign.js';
remote:        
remote:           ^
remote:        
remote:        
remote: 
remote: -----> Build failed

This shows that Heroku was not able to find the imported file 'designUtils/fontDesign.js'

This is because I used the command git commit -am 'latest changes' instead of using the commands git add. , then git status to check if everything was added properly, and then git commit -m 'latest changes'

Answer 24

For me it solved by this command:

git push heroku master --force

or

git push heroku your_branch_name:master --force

Answer 25

尝试将 Node/php 或任何引擎更新到最新版本，然后再次部署它肯定会工作。

Answer 26

you need to mention the language in the root directory

how I fixed with

my python flask does not mention the requirments.text

Heroku detect the

Using buildpack: heroku/python
remote: -----> Python app detected

enter image description here

Answer 27

all I did was

heroku config:set DISABLE_COLLECTSTATIC=1 

Then

git push heroku master

It's work for me.