Principed BSDF not work with texture image

Question

I am currently trying to achieve my terrain texture. So far no problem but not for the last texture. Here's where I'm at right now (without any problem):

Each group (GravelNode, LeaveNode…) Contains the same node pattern, for example:

My goal now is to add a texture with a mask for my road so I add a node and again a mix shader:

But I get this on all my texture:

The origin of the problem comes from the group node grass gravel because when I put a base color constant there is no problem:

The problem is always present when I directly link the color of the image texture to the base color of the principled BSDF or when I use another image.

Can you help me ?

[EDIT]

Answer 1

The problem is probably you have too many textures in one material. Eevee uses your GPU to render which has hardware limits in how many texture can be used at once.

If you check the console you'll probably see

ERROR (gpu.shader): GPU_material_compile Linking:
      | Error: Too many fragment shader texture samplers

There are 5 textures per group times 5 groups, plus 1 Texture Image node, plus 3 Color Ramp nodes (which count as textures), for at least 29 textures.

You can try using Cycles to avoid this limit.