Fix typeerror

funkwhale_network/db.py

@@ -118,7 +118,7 @@ async def get_stats(conn):
         increment_stat(
             data["listenings"], "total", int(check["usage_listenings_total"])
         )
-        increment_stat(data["downloads"], "total", int(check["usage_downloads_total"]))
+        increment_stat(data["downloads"], "total", int(check["usage_downloads_total"] or 0))
     return data