Merge pull request #5 from HuntingFighter/error-fetching-content-type-backup-messages

Repeated Image content_type exception

src/core/exporter.py

@@ -631,7 +631,7 @@ class DiscordExporter:
                     "filename": filename,
                     "size": existing["size"],
                     "url": str(url),
-                    "content_type": existing["content_type"],
+                    "content_type": existing["mime_type"],
                     "local_hash": existing["hash"]
                 }