Improve OG meta processing

app/utils/opengraph.py

@@ -90,6 +90,7 @@ async def external_urls(
             if not h:
                 continue
 
+            try:
                 ph = urlparse(h)
                 mimetype, _ = mimetypes.guess_type(h)
                 if (
@@ -102,6 +103,9 @@ async def external_urls(
                     )
                 ):
                     urls.add(h)
+            except Exception:
+                logger.exception(f"Failed to check {h}")
+                continue
 
     return urls - tags_hrefs