Update main.py

main.py

@@ -331,7 +331,7 @@ async def zenless_characters(uid: int, character_id: str = None, character_art_u
             char_ids = char_id if isinstance(char_id, list) else []
             # The key in the dictionary must be a string
             if char_ids:
-                char_art = {str(char_ids[0]): character_art_url}
+                char_art = {char_ids[0]: character_art_url}
         
         result = await zenless_card(uid, char_id, char_art)
         characters = process_imagess(result, uid)