Problem In Coding A Welcome Message Along With Options In Rasa

I read this answer on How to code a Welcome Message in RASA, accordingly, I did write a custom action but it is not displaying the message as soon as the session starts, instead, i

Solution 1:

Whatever input channel you're using needs to send the /start_session payload to trigger action_session_start. You can do this by just typing /start_session at the prompt. If you're testing this in rasa shell, you need to send the payload manually. Otherwise, it will start the session after the first message (which is what you're observing).