Update src/streamlit_app.py

src/streamlit_app.py

@@ -9,6 +9,7 @@ import yfinance as yf
 import pandas as pd
 import numpy as np
 import matplotlib.pyplot as plt
+import matplotlib.gridspec as gridspec
 import plotly.graph_objects as go
 import plotly.express as px
 from numpy.lib.stride_tricks import sliding_window_view