Update app.py

app.py

@@ -1,5 +1,3 @@
-# File: app.py
-
 import gradio as gr
 import pandas as pd
 import io
@@ -27,7 +25,7 @@ CONFIG = {
 
 def run_analysis(file, tone, gap_filter, custom_prompt):
     df = pd.read_csv(file.name)
-    df.fillna("", inplace=True)
+    df = df.convert_dtypes()  # safer type conversion
 
     quality_issues_df = summarize_data_quality(df)
 
@@ -99,4 +97,4 @@ iface = gr.Interface(
 )
 
 if __name__ == "__main__":
-    iface.launch()
+    iface.launch(share=True)