Your project should use return types

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

in src/Wsdl.php, line 91 
  1.         }
  3.         return $result;
  4.     }
  6.     protected function useExternalSchemas(string $method, array $parameters, ?array $parentResult, bool $returnOne = false)
    Method WsdlToPhp\WsdlHandler\Wsdl::useExternalSchemas() has no return type specified.
    Time to fix: about 9 minutes
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                                    Last edited  by Mikaël DELSOL
                    
  7.     {
  8.         $result = $parentResult;
  10.         foreach ($this->getExternalSchemas() as $externalSchema) {
  11.             $externalResult = call_user_func_array([$externalSchema, $method], $parameters);