Laravel 5 Failed opening required bootstrap/../vendor/autoload.php

Question

I have recently installed Laravel 5 via composer. I tried creating a new controller using artisan and I get the following error:

bootstrap/../vendor/autoload.php. Failed to open stream: No such file or directory. The "vendor" folder does not exist.

Am I missing something?

Answer 1

Run composer with --no-scripts

composer update --no-scripts  

This shall fix the issue. I tried this on Mac and Linux.

Answer 2

Which OS you are using ? For Windows : Go to Command Prompt

set path to www/{ur project}

For me : www/laravel5

Then type this command : composer install

It will automatically install all dependency in vendor/

Answer 3

在您的根项目文件夹（或php composer.phar install ）中运行composer install 。

Answer 4

Turns out I didn't enable openssl in my php.ini so when I created my new project with composer it was installed from source. I changed that and ran

composer update

now the vendor folder was created.

Answer 5

Did you create a new project or did you clone an existing project?

If you cloned an existing project it's very important to run

composer install

That way all the dependencies that are missing will be installed.

But if you create a new project you should run this command to make a new project using composer

composer create-project laravel/laravel name-of-your-project

Answer 6

I encountered the same problem. It occurred because composer was not able to install the dependencies specified in composer.json file. try running

composer install 

If this does not solve the problem, make sure the following php modules are installed php-mbstring php-dom

To install this extensions run the following in terminal

sudo apt-get install php-mbstring php-dom

once the installation is complete

try running the command in your project root folder

composer install 

Answer 7

Following this below step solved my problem. You may try

composer update --no-scripts 
composer update

Answer 8

You need to regenerate autoload.php file. you can use dump-autoload to do that without having to go through an install or update.

use

composer dump-autoload

to generate autoload.php file again in /vendor directory.

Answer 9

只需在安装项目的目录中运行它

composer install

Answer 10

在检查php版本和大量研究后，问题出在Composer端，所以只需运行以下命令

composer install --ignore-platform-reqs

Answer 11

go to your project folder via cmd. run the following command

composer update

it will install the missing vendor folder and files in your project.

but in some cases, it gives an error like "Your configuration does not allow connection to ....." in cmd.

for that go to your composer.json file,

change "secure-http": true to "secure-http": false

but in some cases (as was in my case) you may not find such line in your file. for that do the following action:

change "config": {
        "preferred-install": "dist"
}

to

"config": {
    "preferred-install": "dist",
    "secure-http": false
}

and run again composer update command.

hope this will solve problem.

Answer 12

This solution worked for me. The reason is not to have a vendor folder in your application.

Follow these steps:

1. if your project has composer.json file, delete it

2. then run

   composer require phpspec/phpspec

That command add vendor folder to your project

Answer 13

Just run the following commands,

composer update

Or

composer install

Answer 14

When the new project created the laravel require to load vendors to autoload the libraries , We use composer update to

composer update

Composer is a dependency manager allows you to delegate responsibility for managing your dependencies to a third party.

Answer 15

只需使用composer而不是laravel设置一个新项目，如下所示：

composer create-project --prefer-dist laravel/laravel myProje

Answer 16

删除Vendor然后composer install

Answer 17

I also had that error. But none of the above solved the issue. So i uninstalled and again installed the composer. Then i did composer update . and the problem was fixed.

Answer 18

Before you carry out the following instructions you need to make sure you have composer installed globally on your machine; Open you Mac terminal and run the following command:

curl -sS https://getcomposer.org/installer | sudo php -- --install-dir=/usr/local/bin --filename=composer

once composer is installed globally run the following command after you are in the directory of the project:

composer install

once completed in it update and install all the required packages.

Answer 19

我在 laravel 和 artisan 上遇到了同样的问题，解决方法是：

php artisan key:generate

Answer 20

We got an error because we have missing vendor folder in our project, The vendor directory contains our Composer dependencies.

Need /vendor folder because all packages are there and including all the classes Laravel uses, A problem can be solved after following just two steps:

composer update --no-scripts 
composer update

• --no-scripts : Skips execution of scripts defined in composer.json
• composer update : This will check for newer versions of the libraries you required in your project. If a newer version is found and it's compatible with the version constraint defined in the composer.json file, it will replace the previous version installed. The composer.lock file will be updated to reflect these changes.

These two commands, we will Recreate the vendor folder in our project and after that our project will be working smoothly.

Answer 21

当我执行composer update而不是composer install时我得到了这个。

Answer 22

我将composer.lock文件添加到 .gitignore，在将该文件提交到存储库后，错误消失了:)

Answer 23

my problem is solved by

composer update
composer install
php artisan key:generate

if you any other problem you can clear cache and config Clear Route cache:

php artisan route:cache

Clear View cache:

php artisan view:clear

Clear Config cache:

php artisan config:cache

Answer 24

Something I realise is your composer.json file will have some sort of script like

"scripts": {
    "post-root-package-install": [
        "php -r \"copy('.env.example', '.env');\""
    ],
    "post-create-project-cmd": [
        "php artisan key:generate"
    ],
    "post-install-cmd": [
        "php artisan clear-compiled",
        "php artisan optimize"
    ],
    "pre-update-cmd": [
        "php artisan clear-compiled"
    ],
    "post-update-cmd": [
        "php artisan optimize"
    ],
    "post-autoload-dump": [
        "Illuminate\\Foundation\\ComposerScripts::postAutoloadDump",
        "@php artisan package:discover"
    ]
},

what works for me:

"scripts": {
    "post-root-package-install": [
        "@php -r \"file_exists('.env') || copy('.env.example', '.env');\""
    ],
    "post-create-project-cmd": [
        "@php artisan key:generate"
    ],
    "post-autoload-dump": [
        "Illuminate\\Foundation\\ComposerScripts::postAutoloadDump",
        "@php artisan package:discover"
    ]
},

removing post install cmd helped running composer install without any issue.

Hope this helps

Cheers!!

Answer 25

Delete vendor folder and run composer install command. It is working 100%

Answer 26

You are missing vendor folder, probably its new cloned repository or new project

the vendor folder is populated by composer binary which reads composer.json file or system requirements and installs packaged under vendor folder and create an autoload script that has all classed

composer update

Answer 27

In my case I had to enable another extension, namely php_mbstring.dll in the php.ini file before it could work. It's listed under extension=php_mbstring.dll . Find it in the php.ini file and remove the semi-colon ( ; ) in front of it and save the file.

After this run install composer again in the root directory of your Laravel applcication and is should work.

Answer 28

If you are a Windows user you may uninstall Composer. Then install Composer. After that you install Laravel. Maybe it will work.

Answer 29

it may be an issue with installation run following command. It worked for me

cd installationFolder
php artisan package:discover
php artisan key:generate

Answer 30

this works for me: after installing the project, I open the project's folder and run these two commands

composer update

composer require doctrine/dbal

Answer 31

I don't know if I am relevant -

I have downloaded the Github release of laravel and installed with lando, and failed to start it.

In lando recipe, I had to add php: 8.1 in .lando.yml

name: ltest1
recipe: laravel
config:
  webroot: public
  php: 8.1

and

$ lando ssh
$ composer install
$ php artisan key:generate