How to send buttons without text to the cart?

Question

Node.js

I honestly got sick already because of this, this question worried me at the very beginning when I decided to write a bot. Then he scored. because - well, okay, and so something can be printed.
But I was bombed where to shove Keyboard - menu. those buttons that appear right under the text input field? for them, too, what to write. "this is the text so that I can add buttons" ....

I tried it like this, but it says "empty text is wrong .... if anything. I'll attach a screen what I'm talking about.
ctx.reply(undefined, botPanelKeyboard);

Answer 1

⠀ <- there is an invisible symbol, use it)