Either navmesh or AI broke

Out of the blue my project broke and all AI controlled actors stopped moving. In my tries to find the cause I deleted navmesh volume, several times, didn’t fixed a thing. Printing out returning values of getrandompointinnavigableradius revealed that it spews out absolutely insane numbers with 60 symbols in them, even when I plug in 0,0,0 vector coordinates. What could be the case?

Okay so I somehow fixed that… Besides the volume navmesh, there was an Recast Nav Mesh object. I deleted that, and my navmesh returned to normal behavior.