fix app

app.py

@@ -33,6 +33,9 @@ def parse_metric_value(value):
 
 
 def parse_metrics_rows(meta, only_verified=False):
+    meta = meta.to_dict()
+    if 'model-index' not in meta:
+        return None
     if not isinstance(meta["model-index"], list) or len(meta["model-index"]) == 0 or "results" not in meta["model-index"][0]:
         return None
     for result in meta["model-index"][0]["results"]: