I get these two (updated now to 1.22).
Shader error in 'Shader Forge/NewShader': 'gl_' : reserved built-in name at line 144 (on opengl)
and
Shader error in 'Hidden/Shader Forge/PresetPBR': 'gl_' : reserved built-in name at line 144 (on opengl)
Compiling Vertex program with DIRECTIONAL SHADOWS_OFF LIGHTMAP_OFF DIRLIGHTMAP_OFF DYNAMICLIGHTMAP_OFF
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I get these two (updated now to 1.22).
Shader error in 'Shader Forge/NewShader': 'gl_' : reserved built-in name at line 144 (on opengl)
and
Shader error in 'Hidden/Shader Forge/PresetPBR': 'gl_' : reserved built-in name at line 144 (on opengl)
Compiling Vertex program with DIRECTIONAL SHADOWS_OFF LIGHTMAP_OFF DIRLIGHTMAP_OFF DYNAMICLIGHTMAP_OFF