fix(backend): avatar job ends without a crash when telegram does not know the owner

backend/src/userbot/modules/jobs/handlers/fetch_avatar.py

@@ -1,5 +1,12 @@
 from pyrogram import Client
-from pyrogram.errors import FileIdInvalid, FileReferenceExpired, FileReferenceInvalid
+from pyrogram.errors import (
+    ChannelInvalid,
+    ChannelPrivate,
+    FileIdInvalid,
+    FileReferenceExpired,
+    FileReferenceInvalid,
+    PeerIdInvalid,
+)
 from pyrogram.types import ChatPhoto
 
 from userbot.modules.avatars.repository import get_avatar_file, mark_avatar_downloaded
@@ -8,10 +15,14 @@ from userbot.modules.jobs.context import JobContext
 from userbot.modules.jobs.registry import register
 
 STALE_FILE_ID = (FileIdInvalid, FileReferenceExpired, FileReferenceInvalid)
+UNKNOWN_OWNER = (PeerIdInvalid, ChannelInvalid, ChannelPrivate)
 
 
 async def _fresh_file_id(client: Client, owner_id: int, unique_id: str) -> str | None:
+    try:
         chat = await client.get_chat(owner_id)
+    except UNKNOWN_OWNER:
+        return None
     photo = chat.photo if chat else None
     if photo and photo.big_photo_unique_id == unique_id:
         return photo.big_file_id