Update app.py

Added import json

app.py

@@ -1,5 +1,6 @@
 import streamlit as st
 import time
+import json
 import pandas as pd
 import plotly.express as px
 import plotly.graph_objects as go
@@ -15,6 +16,7 @@ from utils import retroalimentacion
 from streamlit_lottie import st_lottie
 import requests
 
+
 # Page configuration
 st.set_page_config(page_title="DeepInsightz", page_icon=":bar_chart:", layout="wide")