Your project uses discouraged functions to kill scripts 2

More information: https://insight.symfony.com/what-we-analyse/php.use_exit_function

in src/Handler/DatabaseHandler.php, line 57 
  1.      * @param AdapterInterface $console
  2.      */
  3.     public function __invoke(Route $route, AdapterInterface $console)
  4.     {
  5.         if (empty($this->config)) {
  6.             exit('Unable to proceed because config data is missing.');
    This line stops the execution flow, without explanation. If this is for debug, you should remove it. If this is to deal with an error, use exceptions instead.
    Time to fix: about 4 hours
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                                    Last edited  by Alex
                    
  7.         }
  9.         $table = new Table(['columnWidths' => [23, 21, 21, 100]]);
  10.         $table->setAutoSeparate(Table::AUTO_SEPARATE_HEADER);
  11.         $table->setPadding(1);
in src/Handler/DatabaseHandler.php, line 145 
  1.                 LocationService::DATABASE_COUNTRY,
  2.             ];
  3.         }
  5.         if (!array_key_exists($identifier, LocationService::DATABASES)) {
  6.             exit(sprintf('Invalid database identifier: %s. Use one of the following identifiers: %s.',
    This line stops the execution flow, without explanation. If this is for debug, you should remove it. If this is to deal with an error, use exceptions instead.
    Time to fix: about 4 hours
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                                    Last edited  by Alex
                    
  7.                 $identifier,
  8.                 implode(', ', self::getValidIdentifiers())
  9.             ));
  10.         }

Your project should not contain commented code 3

More information: https://insight.symfony.com/what-we-analyse/php.commented_out_code

in src/Service/LocationService.php, line 209 
  1.             $bytes[3] = '0';
  2.             return implode('.', $bytes);
  3.         }
  5. //        if (filter_var($ipAddress, FILTER_VALIDATE_IP, FILTER_FLAG_IPV6)) {
  6. //            $bytes = explode(':', $ipAddress);
    Commented out code reduces readability and lowers the code confidence for other developers. If it's common usage for debug, it should not be committed. Using a version control system, such code can be safely removed.
    Time to fix: about 30 minutes
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                                    Last edited  by Alex
                    
  7. //            $bytes[count($bytes) - 1] = '0000';
  8. //            return implode(':', $bytes);
  9. //        }
  11.         throw new Exception('Invalid IP address: ' . $ipAddress);
in src/Service/LocationService.php, line 210 
  1.             return implode('.', $bytes);
  2.         }
  4. //        if (filter_var($ipAddress, FILTER_VALIDATE_IP, FILTER_FLAG_IPV6)) {
  5. //            $bytes = explode(':', $ipAddress);
  6. //            $bytes[count($bytes) - 1] = '0000';
    Commented out code reduces readability and lowers the code confidence for other developers. If it's common usage for debug, it should not be committed. Using a version control system, such code can be safely removed.
    Time to fix: about 30 minutes
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                                    Last edited  by Alex
                    
  7. //            return implode(':', $bytes);
  8. //        }
  10.         throw new Exception('Invalid IP address: ' . $ipAddress);
  11.     }
in src/Service/LocationService.php, line 211 
  1.         }
  3. //        if (filter_var($ipAddress, FILTER_VALIDATE_IP, FILTER_FLAG_IPV6)) {
  4. //            $bytes = explode(':', $ipAddress);
  5. //            $bytes[count($bytes) - 1] = '0000';
  6. //            return implode(':', $bytes);
    Commented out code reduces readability and lowers the code confidence for other developers. If it's common usage for debug, it should not be committed. Using a version control system, such code can be safely removed.
    Time to fix: about 30 minutes
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                                    Last edited  by Alex
                    
  7. //        }
  9.         throw new Exception('Invalid IP address: ' . $ipAddress);
  10.     }
  11. }