I’m working on a Laravel application that needs to send emails through Mailgun. Everything runs perfectly fine on my local development setup, but when I deploy to my production server, I keep getting this error:
I’ve already tried running composer install and composer update on the production server. I also checked that all my Mailgun configuration is correct in the .env file. The weird part is that email sending works without any issues in my local environment.
Has anyone experienced this issue before? What could be different between local and production that would cause the Guzzle HTTP client to not be found?
It seems you’re encountering a common issue that can arise when deploying Laravel applications. The error regarding the missing GuzzleHttp\Client class suggests that there may be a problem with your dependencies on the production server. Firstly, ensure that the ‘vendor/guzzlehttp’ directory exists after running ‘composer install’. If it’s not present, you could explicitly require Guzzle in your project’s composer.json file by adding ‘guzzlehttp/guzzle’ as a dependency. Additionally, check for appropriate file permissions, which could affect class loading, and ensure your PHP version on the server aligns with your local environment. Running ‘composer dump-autoload -o’ might also help resolve autoloading issues. This should provide a clearer path forward.
Had the same issue a few months ago - turned out to be a missing PHP extension. Production was missing php-curl, which Guzzle needs. Run php -m | grep curl to check if it’s installed. If not, install it with sudo apt-get install php-curl (or whatever works for your OS). Also check your PHP memory limits - I’ve seen class loading fail silently when production runs out of memory. Don’t forget to restart your web server after installing extensions. When it works locally but breaks in production, it’s usually environment differences like this, not your code.
your production server probly has --no-dev flag on for composer. that strips dev dependencies and can break things. try running composer install --no-dev --optimize-autoloader directly, or just do composer install without flags to fix the guzzle issue.