Fatal error: Uncaught Error: Class "Composer\Installers\BaseInstaller" not found in /home/jtlqzqm/portfolioV2/vendor/composer/installers/src/Composer/Installers/PlentymarketsInstaller.php:4 Stack trace: #0 {main} thrown in /home/jtlqzqm/portfolioV2/vendor/composer/installers/src/Composer/Installers/PlentymarketsInstaller.php on line 4