Fix.

actions.py

@@ -107,8 +107,6 @@ async def add_sticker(bot, file, emoji):
   if not pack:
     pack = await create_new_pack(bot, sticker)
   else:
-    await StickerPack.filter(id=pack.id).update(stickers_count=F('stickers_count') + 1)
-
     pack = await bot(AddStickerToSetRequest(
       stickerset=InputStickerSetID(
         id=pack.sid,
@@ -116,6 +114,8 @@ async def add_sticker(bot, file, emoji):
       ), 
       sticker=sticker
     ))
+
+    await StickerPack.filter(id=pack.id).update(stickers_count=F('stickers_count') + 1)
     
   return get_input_document(pack.documents[-1])