Fatal error: Uncaught Error: Class "Whoops\Run" not found in /var/www/vendor/spartan/logger/src/Formatter/Whoops.php:20 Stack trace: #0 /var/www/vendor/monolog/monolog/src/Monolog/Handler/AbstractProcessingHandler.php(46): Spartan\Logger\Formatter\Whoops->format(Array) #1 /var/www/vendor/monolog/monolog/src/Monolog/Logger.php(400): Monolog\Handler\AbstractProcessingHandler->handle(Array) #2 /var/www/vendor/monolog/monolog/src/Monolog/Logger.php(651): Monolog\Logger->addRecord(400, 'Class "Whoops\\R...', Array) #3 /var/www/vendor/spartan/error/src/Handler/Error/Logging.php(27): Monolog\Logger->error('Class "Whoops\\R...', Array) #4 /var/www/vendor/spartan/error/src/ServiceProvider.php(76): Spartan\Error\Handler\Error\Logging->handle(Object(Error)) #5 [internal function]: Spartan\Error\ServiceProvider->Spartan\Error\{closure}(Object(Spartan\Http\Exception\HttpUnauthorized)) #6 {main} thrown in /var/www/vendor/spartan/logger/src/Formatter/Whoops.php on line 20