Erreur 500 : Argument 1 passed to Geocoder\Query\GeocodeQuery::create() must be of the type string, null given

Component/CitiesComponent.php

 
     public function callAddressApi($query)
     {
-        $provider = $this->getGeocoderProvider() ;;
+        if(is_null($query)) {
+            $query = '';
+        }
+
+        $provider = $this->getGeocoderProvider() ;
         $query = GeocodeQuery::create($query)->withData('type', 'housenumber');
         $results = $provider->geocodeQuery($query);
         $resultsToReturn = array();