Monolog Logger Error Fix

Fatal error: Uncaught Error: Class "MonologLogger" not found in /var/www/html/vendor/monolog/monolog/src/Monolog/Handler/AbstractHandler.php:60 Stack trace: #0 /var/www/html/vendor/monolog/monolog/src/Monolog/Handler/AbstractHandler.php(38): MonologHandlerAbstractHandler->setLevel() #1 /var/www/html/vendor/monolog/monolog/src/Monolog/Handler/StreamHandler.php(49): MonologHandlerAbstractHandler->__construct() #2 /var/www/html/vendor/illuminate/log/LogManager.php(187): MonologHandlerStreamHandler->__construct() #3 /var/www/html/vendor/illuminate/log/LogManager.php(141): IlluminateLogLogManager->createEmergencyLogger() #4 /var/www/html/vendor/illuminate/log/LogManager.php(124): IlluminateLogLogManager->get() #5 /var/www/html/vendor/illuminate/log/LogManager.php(681): IlluminateLogLogManager->driver() #6 /var/www/html/vendor/roots/acorn/src/Illuminate/Foundation/Exceptions/Handler.php(317): IlluminateLogLogManager->error() #7 /var/www/html/vendor/roots/acorn/src/Illuminate/Foundation/Exceptions/Handler.php(278): IlluminateFoundationExceptionsHandler->reportThrowable() #8 /var/www/html/vendor/roots/acorn/src/Illuminate/Foundation/Bootstrap/HandleExceptions.php(183): IlluminateFoundationExceptionsHandler->report() #9 /var/www/html/vendor/roots/acorn/src/Illuminate/Foundation/Bootstrap/HandleExceptions.php(231): IlluminateFoundationBootstrapHandleExceptions->handleException() #10 [internal function]: IlluminateFoundationBootstrapHandleExceptions->handleShutdown() #11 {main} thrown in /var/www/html/vendor/monolog/monolog/src/Monolog/Handler/AbstractHandler.php on line 60
public function emergency(Stringable|string $message, array $context = []): void
{
$this->addRecord(Level::Emergency, (string) $message, $context);
}

### Steps to Fix:

#### 1. **Check Your PHP Version**
Run:

php -v

Ensure you're running **PHP 8.3+** if you're using Monolog 3.x.

#### 2. **Check Installed Versions**
Run:

composer show monolog/monolog psr/log

This will show which versions are installed.

#### 3. **Force Monolog and PSR-Log Compatibility**
Try running:

composer require monolog/monolog:^2.0 psr/log:^3.0 --with-dependencies

or if you're using Monolog 3:

composer require monolog/monolog:^3.0 psr/log:^3.0 --with-dependencies

#### 4. **Clear Cache and Regenerate Autoload**

composer dump-autoload
php artisan cache:clear
php artisan config:clear
php artisan optimize:clear

#### 5. **Ensure Dependencies Are Properly Installed**
If the issue persists, run:

composer install --prefer-dist --no-dev

#### 6. **Check for Broken Dependencies**
Run:

composer diagnose

If any dependency conflicts exist, resolve them accordingly.

After these steps, restart your server:

php artisan serve

or restart your web server if running on Apache/Nginx.

Let me know if the issue persists! 🚀

1. **Locate the Logger Class**: Find the `Logger.php` file in your Monolog package directory. This is usually located at:

/var/www/html/vendor/monolog/monolog/src/Monolog/Logger.php

2. **Modify the Method Signature**: Change the method signature of the `emergency` function to be compatible with the PSR-Log interface. Replace:

public function emergency(Stringable|string $message, array $context = []): void
   {
       $this->addRecord(Level::Emergency, (string) $message, $context);
   }

with:

public function emergency($message, array $context = []): void
   {
       $this->addRecord(Level::Emergency, (string) $message, $context);
   }

3. **Save the Changes**: After making the changes, save the `Logger.php` file.

4. **Clear Cache and Autoload**: Run the following commands to ensure that the changes take effect:

composer dump-autoload
   php artisan cache:clear
   php artisan config:clear
   php artisan optimize:clear

### Note
Modifying files in the `vendor` directory is generally not recommended because they can be overwritten by future updates. To ensure long-term compatibility, it’s best to resolve the version conflicts through Composer as outlined in the previous response.

If you can, please consider updating the Monolog and PSR-Log versions in your `composer.json` file to ensure they are compatible with each other, rather than modifying library code directly.