fix: added default product image, removed empty tables prints, fixed barcode output

utils/images_fetcher.py

@@ -1,11 +1,14 @@
 import asyncio
 import base64
-from typing import List, Tuple
+from typing import List, Tuple, Optional
 
 import aiohttp
 
 
-async def fetch_image(url: str) -> str:
+async def fetch_image(url: Optional[str]) -> str:
+    if not url:
+        return ""
+
     async with aiohttp.ClientSession() as session:
         async with session.get(url) as response:
             if response.status == 200:
@@ -15,6 +18,6 @@ async def fetch_image(url: str) -> str:
                 return ""
 
 
-async def fetch_images(urls: List[str]) -> Tuple[str]:
+async def fetch_images(urls: List[Optional[str]]) -> Tuple[str]:
     tasks = [fetch_image(url) for url in urls]
     return await asyncio.gather(*tasks)