Update app.py

app.py

@@ -301,7 +301,7 @@ def send_email_with_attachment(recipient_email, subject, body, image_data):
         # Create SMTP session for sending the mail
         print(body)
         context = ssl.create_default_context()
-        with smtplib.SMTP(smtp_server, 587) as server:
+        with smtplib.SMTP("smtp.gmail.com", 587) as server:
             server.ehlo()  # Can be omitted
             server.starttls(context=context)
             server.ehlo()  # Can be omitted