polybrush issue -black mesh

hi

I created a sphere using unity
then I went and assigned a polybrush/standard texture blend bump
then I assign four textures into the texture slots
into
base color
texture 1
texture 2
texture 3

no bump maps

then when I went into polybrush paint texture the whole mesh goes black

what am I doing wrong


please help

 

no errors in the console

 

I can push and pull (edit mesh using brushes )so I know the scripts are working but it just won't Render any textures

all of my other models are displaying textures with other materials

 

its just this shader is having a hard time on my Mac

 

I am using the standard shaders from polybrush not LWRP or HDRP and I have not enabled any renderers

this is just the default project with default settings

 

I got the same problem, maybe it's just in mac

 

I solved it temporaly using a example of polybrush texture instead of using poly brush bump i used polybrush snow and i place the textures, no black spots and it paint textures.