Fix SQL syntax order needs to be a single string

Author: williamdes

src/Controller/Component/OrderSearchComponent.php

@@ -83,11 +83,12 @@ public function getOrder(array $aColumns, ServerRequest $request): ?array
 
             $keys = array_keys($aColumns);
 
+            $sortDir = $request->getQuery('sSortDir_0');
             if (
                 $sort_column_index > 0
                 && $request->getQuery('bSortable_' . $sort_column_index) === 'true'
             ) {
-                $order[$aColumns[$keys[$sort_column_index - 1]]] = $request->getQuery('sSortDir_0');
+                $order[] = [$aColumns[$keys[$sort_column_index - 1]] . ' ' . $sortDir];
             }
 
             return $order;