Update app.py

app.py

@@ -1,7 +1,6 @@
 import gradio as gr
 import google.generativeai as genai
 import os
-import json
 from datetime import datetime
 import plotly.express as px
 import pandas as pd
@@ -171,6 +170,7 @@ button, input, select, textarea { border-radius: 8px; margin: 5px; }
 with gr.Blocks(css=css, title="Mental Health Support Chatbot") as demo:
     # Initialize state
     state = gr.State({"mood_journal": [], "feedback": []})
+    history = gr.State()
     
     # Theme Toggle
     theme_state = gr.State(value="light")