try other port

app.py

@@ -125,7 +125,7 @@ def send_message(user_input):
         # Create the email message
         print("sending mail")
         print(MY_PASSWORD)
-        with smtplib.SMTP("smtp.gmail.com",3000) as connection:
+        with smtplib.SMTP("smtp.gmail.com",8888) as connection:
             connection.starttls()
             connection.login(MY_EMAIL, MY_PASSWORD)
             connection.sendmail(from_addr=MY_EMAIL,