Blueprint Asteroids field

Hi there, i’m getting this issue where it says “Object Object reference is not compatible with Actor object reference” check this image: https://i.imgur.com/JjBlmtE.png
Same goes for connecting it to the Static mesh. I tried everything, even casting to the BP_Asteroid, which made it compile, but the asteroids are not showing up in the editor. Hope you can help, thanks in advance!