Fatal error: Uncaught Error: Class "Psr\Log\AbstractLogger" not found in /var/www/html/CMR/API/serv-new-cm/vendor/slim/slim/Slim/Logger.php:19 Stack trace: #0 /var/www/html/CMR/API/serv-new-cm/vendor/composer/ClassLoader.php(571): include() #1 /var/www/html/CMR/API/serv-new-cm/vendor/composer/ClassLoader.php(428): Composer\Autoload\includeFile() #2 /var/www/html/CMR/API/serv-new-cm/vendor/slim/slim/Slim/Handlers/ErrorHandler.php(283): Composer\Autoload\ClassLoader->loadClass() #3 /var/www/html/CMR/API/serv-new-cm/vendor/slim/slim/Slim/Handlers/ErrorHandler.php(102): Slim\Handlers\ErrorHandler->getDefaultLogger() #4 /var/www/html/CMR/API/serv-new-cm/vendor/slim/slim/Slim/Middleware/ErrorMiddleware.php(129): Slim\Handlers\ErrorHandler->__construct() #5 /var/www/html/CMR/API/serv-new-cm/vendor/slim/slim/Slim/Middleware/ErrorMiddleware.php(118): Slim\Middleware\ErrorMiddleware->getDefaultErrorHandler() #6 /var/www/html/CMR/API/serv-new-cm/vendor/slim/slim/Slim/Middleware/ErrorMiddleware.php(90): Slim\Middleware\ErrorMiddleware->getErrorHandler() #7 /var/www/html/CMR/API/serv-new-cm/vendor/slim/slim/Slim/Middleware/ErrorMiddleware.php(79): Slim\Middleware\ErrorMiddleware->handleException() #8 /var/www/html/CMR/API/serv-new-cm/vendor/slim/slim/Slim/MiddlewareDispatcher.php(129): Slim\Middleware\ErrorMiddleware->process() #9 /var/www/html/CMR/API/serv-new-cm/vendor/slim/slim/Slim/MiddlewareDispatcher.php(73): Psr\Http\Server\RequestHandlerInterface@anonymous->handle() #10 /var/www/html/CMR/API/serv-new-cm/vendor/slim/slim/Slim/App.php(209): Slim\MiddlewareDispatcher->handle() #11 /var/www/html/CMR/API/serv-new-cm/vendor/slim/slim/Slim/App.php(193): Slim\App->handle() #12 /var/www/html/CMR/API/serv-new-cm/service.php(3745): Slim\App->run() #13 {main} thrown in /var/www/html/CMR/API/serv-new-cm/vendor/slim/slim/Slim/Logger.php on line 19