Icon ton install plugin not found

Hello,
After install on raspberry pi 3,
I would like to see the Hass.io panel with Add-on icon.

But, I not see Hass.io in the menu. It’s not in Home hamburger menu.

Can you help me ?

The hassio panel is only pressent on hassio installation.
And only if one of this are present in the configuration:
hassio:
discovery: