app: Fix errors maybe?

streamlit/streamlit#469

Author: Michael Becker

app.py

@@ -1,6 +1,8 @@
 import pandas as pd
 import streamlit as st
 import numpy as np
+import matplotlib
+matplotlib.use('Agg')
 import matplotlib.pyplot as plt
 
 hide_menu_style = """
@@ -57,7 +59,7 @@
 
 st.title("COVID-19 Hospital Impact Model for Epidemics")
 st.markdown(
-    """*This tool was developed by the [Predictive Healthcare team](http://predictivehealthcare.pennmedicine.org/) at Penn Medicine. For questions and comments please see our [contact page](http://predictivehealthcare.pennmedicine.org/contact/).* **If you see any error messages please reload the page.**"""
+    """*This tool was developed by the [Predictive Healthcare team](http://predictivehealthcare.pennmedicine.org/) at Penn Medicine. For questions and comments please see our [contact page](http://predictivehealthcare.pennmedicine.org/contact/).*"""
 )
 
 if st.checkbox("Show more info about this tool"):