nav data has not been generated

I use "Find path immediete" BP, but following error occures.
"UESVON: Error: Pawn is not inside an SVON volume, or nav data has not been generated"

I followed the steps below, and confirmed pawn is inside an SVON volume
●Install the plugin (to Plugins/ folder)
●Add an SVONVolume to my level
●Add a SVONNavigationComponent to my AI Controller

Does anyone know how to generate nav data?

[sibo7851]

Hey I'm having issues with this as well, the wiki simply says to click the Generate button on the SVONVolume details panel and when I do that I can debug the voxels generated, but for some reason I still get the same output.