Update app.py

app.py

@@ -4,7 +4,8 @@ import seaborn as sns
 import matplotlib.pyplot as plt
 import os
 import pandas as pd
-from io import StringIO
+from io import StringIO, BytesIO
+import base64
 # from linePlot import plot_stacked_time_series, plot_emotion_topic_grid
 
 # Define your Hugging Face token (make sure to set it as an environment variable)