empty row issue in gradio and df

app.py

@@ -37,6 +37,10 @@ def update_table(img, img_name, df, state, label, exemplars_state, lut_state):
     print('new', new_df)
     print('old', df)
     df = pd.concat([df, new_df])
+    print('new', df)
+    filt = df["image_name"] != ""
+    df = df[filt]
+    print('new', df)
     state.pop()
     t = state[-10:]
     random.shuffle(t)