(fix): ensure arrays are sent to tags and not objects

Core/Search/Mappings/EntityMapping.php

@@ -186,7 +186,7 @@ class EntityMapping implements MappingInterface
             $map['tags'] = [];
         }
 
-        $map['tags'] = array_unique(array_merge($map['tags'], array_map('strtolower', $tags)));
+        $map['tags'] = array_values(array_unique(array_merge($map['tags'], array_map('strtolower', $tags))));
 
         $map['nsfw'] = array_unique($this->entity->getNsfw());
 

Core/Search/Mappings/GroupMapping.php

@@ -33,7 +33,7 @@ class GroupMapping extends EntityMapping implements MappingInterface
         $map['membership'] = (int) $this->entity->getMembership();
         $map['public'] = $map['membership'] == ACCESS_PUBLIC;
 
-        $map['tags'] = array_unique(array_merge($map['tags'], $this->entity->getTags()));
+        $map['tags'] = array_values(array_unique(array_merge($map['tags'], $this->entity->getTags())));
         $map['rating'] = $this->entity->getRating();
         
         return $map;

Core/Search/Mappings/UserMapping.php

@@ -53,7 +53,7 @@ class UserMapping extends EntityMapping implements MappingInterface
             $map['group_membership'] = [];
         }
 
-        $map['tags'] = array_unique($this->entity->getTags());
+        $map['tags'] = array_values(array_unique($this->entity->getTags()));
 
         return $map;
     }