Bevel not working

TannedBatman

Bevel creates an error on the left and cuts a bit out of the geometry. 
I tried to then get rid of ngons but as soon as I pressed enter it created another error. 
Yep im really confused and would love to hear from anyone who knows why this happens because it would help a lot in the future. Thanks

IxenonI

It`s probably a non manifold face between your inner shape and your outer shape. Delete the flat face and manually extrude out the edges from the inner shape and target weld them to the outer shape. After that you should be able to bevel.

You can also run Mesh -> Cleanup and check for non manifold geo. 

PolyHertz

Ngon with one or more holes in it + bevel = disaster. That's almost always the case.

Give that ngon some proper topology then try again.

TheGabmeister

This also happens to me when I have non-convex ngons. Use multi-cut to divide that ngon into convex shapes which will make it easier for bevels.

TannedBatman

Whats a non-convex ngon I cant seem to see anything online.

Obscura

An ngon that is concave