teamf teamf - 1 year ago 289
PHP Question

Fatal error: Class ... not found in ... /ProviderRepository.php on line 146

This sounds like a trivial mistake, but I've been unable to find the solution for hours.

I tried to use in my Laravel project, and I added it using composer.

Here's my composer.json.

"name": "laravel/laravel",
"description": "The Laravel Framework.",
"keywords": ["framework", "laravel"],
"license": "MIT",
"type": "project",
"require": {
"php": ">=5.5.9",
"laravel/framework": "5.1.*",
"michaelb/laravel-db2": "~2.0"
"require-dev": {
"fzaninotto/faker": "~1.4",
"mockery/mockery": "0.9.*",
"phpunit/phpunit": "~4.0",
"phpspec/phpspec": "~2.1"
"autoload": {
"classmap": [
"psr-4": {
"App\\": "app/"
"autoload-dev": {
"classmap": [
"scripts": {
"post-install-cmd": [
"php artisan clear-compiled",
"php artisan optimize"
"pre-update-cmd": [
"php artisan clear-compiled"
"post-update-cmd": [
"php artisan optimize"
"post-root-package-install": [
"php -r \"copy('.env.example', '.env');\""
"post-create-project-cmd": [
"php artisan key:generate"
"config": {
"preferred-install": "dist"

Here's the error:

PHP Fatal error: Class 'MichaelB\Database\DB2\DB2ServiceProvider' not found in /var/www/html/mysjsu/vendor/laravel/framework/src/Illuminate/Foundation/ProviderRepository.php on line 146


Class 'MichaelB\Database\DB2\DB2ServiceProvider' not found

I found a similar question before on StackOverflow, and somebody suggested that the order matters. So, here's what I did in the following order:

  1. add
    "michaelb/laravel-db2": "~2.0"

  2. run
    php ../composer.phar update

  3. add
    to the
    arary in

  4. run
    php artisan migrate

Any idea on what might've been the problem?

Answer Source

This package is a fork of cooperl/laravel-db2. The documentation is inaccurate.

He changed the namespace to MichaelB but never tagged this as a stable version, so when you composer require his ~2.0, packagist gives you an older version with the wrong namespace.

So when you run composer update, it runs some post-cmd scripts such as php artisan optimize which tries to pull from the config file but fails because that class doesn't exist.

Here's how to fix it:

  1. Change composer.json to this version:

    "michaelb/laravel-db2": "dev-master"
  2. Run composer update --no-scripts

Then you should be good.

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