Fatal error: Uncaught Error: Interface "Architekci2\JsonSerializable" not found in /srv/architekci2/src/Project.php:6 Stack trace: #0 /srv/architekci2/vendor/composer/ClassLoader.php(576): include() #1 /srv/architekci2/vendor/composer/ClassLoader.php(427): {closure:Composer\Autoload\ClassLoader::initializeIncludeClosure():575}('/srv/architekci...') #2 /srv/architekci2/public/index.php(4): Composer\Autoload\ClassLoader->loadClass('Architekci2\\Pro...') #3 {main} thrown in /srv/architekci2/src/Project.php on line 6