Update app.py

app.py

@@ -99,11 +99,15 @@ def main():
     st.set_option('deprecation.showPyplotGlobalUse', False)
     st.set_page_config(page_title="Review Sentiment Analysis and Improvement Summarisation Report for Business Product", page_icon="🦜")
     st.header("Review Sentiment Analysis and Improvement Summarisation Report for Business Product")
-    uploaded_file = st.file_uploader("🔶 Upload CSV file for analysis 🔶", type={"csv"})
-    columnname = st.text_input("🔶 Please enter the column name in CSV file you want to analyze 🔶")
-    num_data = st.number_input("🔶 Please enter the number of rows you want to process 🔶",step=1)
-    input_data = pd.read_csv(uploaded_file)
-    st.dataframe(input_data)
+    try:
+        uploaded_file = st.file_uploader("🔶 Upload CSV file for analysis 🔶", type={"csv"})
+        if dataset is not None:
+            columnname = st.text_input("🔶 Please enter the column name in CSV file you want to analyze 🔶")
+            num_data = st.number_input("🔶 Please enter the number of rows you want to process 🔶",step=1)
+            input_data = pd.read_csv(uploaded_file)
+            st.dataframe(input_data)
+    except:
+        st.write("Please load a file to continue...")
     st.text('️️ ')
     if uploaded_file is not None:
         uploaded_file.seek(0)