Add to Any Whats app button

Hello,

I am getting following error when I tried to click on Whatsapp icon on my post after installing AddToAny plugin. Which additional software is required for whatsapp wordpress integration?

Firefox doesn’t know how to open this address, because one of the following protocols (whatsapp) isn’t associated with any program or is not allowed in this context.

You might need to install other software to open this address.