Fatal error: Uncaught Error: Class 'Composer\Installer\LibraryInstaller' not found in /home/mpolsk5/public_html/lakemissouri.com/vendor/craftcms/plugin-installer/src/Installer.php:21 Stack trace: #0 {main} thrown in /home/mpolsk5/public_html/lakemissouri.com/vendor/craftcms/plugin-installer/src/Installer.php on line 21