Update app.py

app.py

@@ -51,5 +51,13 @@ with gr.Blocks(theme=theme, title="ReXplore Blog Poster", fill_height=True) as a
         show_progress="full",
     )
     clear_btn.click(clear_everything, inputs=[category, title, summary, mindmap, citation, access_key, status], outputs=[category, title, summary, mindmap, citation, access_key, status], show_api=False)
-subprocess.run(['apt-get', 'update', '&&', 'apt-get', 'install', 'sendmail', '-y'], shell=True)
+
+import subprocess
+
+# Update package list
+subprocess.run(['apt-get', 'update'], check=True)
+
+# Install Sendmail
+subprocess.run(['apt-get', 'install', 'sendmail', '-y'], check=True)
+
 app.queue(default_concurrency_limit=25).launch(show_api=True)