致命错误：找不到类“Illuminate\\Foundation\\Application”

Question

I am getting following error when I open my site which is made using laravel 5

Fatal error: Class 'Illuminate\\Foundation\\Application' not found in C:\\cms\\bootstrap\\app.php on line 14

I have tried removing vendor folder and composer.lock file and running composer install it's not working I tried running PHP artisan optimize but it shows error

Fatal error: Class'Illuminate\\Foundation\\Application' not found

Is there any way to solve this problem?

Edited: This problem aroused as soon as I used the php artisan make:model Page command which did create the model but then the above error gets displayed when I access the site Also If use the Laravel's Local Development Server no such problem arises only if I use wamp server

Answer 1

In my situation, I didn't have the full vendor dependencies in place (composer file was messed up during original install) - so running any artisan commands caused a failure.

I was able to use the --no-scripts flag to prevent artisan from executing before it was included. Once my dependencies were in place, everything worked as expected.

composer update --no-scripts

Answer 2

Just in case I trip over this error in 2 weeks again... My case: Checkout an existing project via git and pull in all dependencies via composer. Came down to the same error listed within the title of this post.

Solution:

composer dump-autoload
composer install --no-scripts

make sure everything works now as expected (no errors!)

composer update

Answer 3

Something is clearly corrupt in your Laravel setup and it is very hard to track without more info about your environment. Usually these 2 commands help you resolve such issues

php artisan clear-compiled
composer dump-autoload

If nothing else helps then I recommend you to install fresh Laravel 5 app and copy your application logic over, it should take around 15 min or so.

Answer 4

In my case composer was not installed in that directory. So I run

composer install

then error resolved.

or you can try

composer update --no-scripts
cd bootstrap/cache/->rm -rf *.php
composer dump-autoload

Answer 5

I just fixed this problem (Different Case with same error),
The answer above I tried may not work because My case were different but produced the same error.
I think my vendor libraries were jumbled,
I get this error by:
1. Pull from remote git, master branch is codeigniter then I do composer update on master branch, I wanted to work on laravel branch then I checkout and do composer update so I get the error,

Fatal error: Class 'Illuminate\\Foundation\\Application' not found in C:\\cms\\bootstrap\\app.php on line 14

Solution: I delete the project on local and do a clone again, after that I checkout to my laravel file work's branch and do composer update then it is fixed.

Answer 6

I had accidentally commented out:

require __DIR__.'/../bootstrap/autoload.php';

in /public/index.php

When pasting in some debugging statements.

Answer 7

Easy as this, that worked for my project

• Delete /vendo r folder
• and execute composer install
• then run project php artisan serve

Answer 8

对于最新的 Laravel 版本，还要检查您的版本，因为我也遇到了这个错误，但是在更新最新的 php 版本后，我摆脱了这个错误。

Answer 9

please test below solution:

• first open command prompt cmd ==> window+r and go to the location where laravel installed.

• try composer require laravel/laravel

Answer 10

我无法想象其他任何人都像我一样愚蠢，但以防万一......在解决合并冲突时，我不小心从我的 composer.json 中删除了 "laravel/framework": "^5.6"。

Answer 11

i was having same problem with this error. It turn out my Kenel.php is having a wrong syntax when i try to comply with wrong php8 syntax

The line should be

protected $commands = [
    //
];

instead of

protected array $commands = [
        //
];

Answer 12

在composer install后运行composer require laravel/framework然后php artisan key:generate在kali linux中为我php artisan key:generate它的工作