Resolved Material doesn't have a texture property '_BaseColor'

I got this error:
Material doesn't have a texture property '_BaseColor'
UnityEngine.Material:get_mainTexture()

I am using out of the box URP shaders, nothing special. It seem that the shader has this property _BaseColor, but still the error occurs. Any ideas whats going wrong?

Here an exaple of shader code:

Code (CSharp):

1. Shader "Universal Render Pipeline/Simple Lit"
2. {
3.     // Keep properties of StandardSpecular shader for upgrade reasons.
4.     Properties
5.     {
6.         [MainTexture] _BaseColor("Base Color", Color) = (1, 1, 1, 1)
7.         [MainColor] _BaseMap("Base Map (RGB) Smoothness / Alpha (A)", 2D) = "white" {}
8.  
9.         _Cutoff("Alpha Clipping", Range(0.0, 1.0)) = 0.5
10.  
11.         _SpecColor("Specular Color", Color) = (0.5, 0.5, 0.5, 0.5)
12.         _SpecGlossMap("Specular Map", 2D) = "white" {}
13.         [Enum(Specular Alpha,0,Albedo Alpha,1)] _SmoothnessSource("Smoothness Source", Float) = 0.0
14.         [ToggleOff] _SpecularHighlights("Specular Highlights", Float) = 1.0
15.  
16.         [HideInInspector] _BumpScale("Scale", Float) = 1.0
17.         [NoScaleOffset] _BumpMap("Normal Map", 2D) = "bump" {}
18.  
19.         _EmissionColor("Emission Color", Color) = (0,0,0)
20.         [NoScaleOffset]_EmissionMap("Emission Map", 2D) = "white" {}
21.  
22.         // Blending state
23.         [HideInInspector] _Surface("__surface", Float) = 0.0
24.         [HideInInspector] _Blend("__blend", Float) = 0.0
25.         [HideInInspector] _AlphaClip("__clip", Float) = 0.0
26.         [HideInInspector] _SrcBlend("__src", Float) = 1.0
27.         [HideInInspector] _DstBlend("__dst", Float) = 0.0
28.         [HideInInspector] _ZWrite("__zw", Float) = 1.0
29.         [HideInInspector] _Cull("__cull", Float) = 2.0
30.  
31.         [ToogleOff] _ReceiveShadows("Receive Shadows", Float) = 1.0
32.  
33.         // Editmode props
34.         [HideInInspector] _QueueOffset("Queue offset", Float) = 0.0
35.         [HideInInspector] _Smoothness("SMoothness", Float) = 0.5
36.  
37.         // ObsoleteProperties
38.         [HideInInspector] _MainTex("BaseMap", 2D) = "white" {}
39.         [HideInInspector] _Color("Base Color", Color) = (1, 1, 1, 1)
40.         [HideInInspector] _Shininess("Smoothness", Float) = 0.0
41.         [HideInInspector] _GlossinessSource("GlossinessSource", Float) = 0.0
42.         [HideInInspector] _SpecSource("SpecularHighlights", Float) = 0.0
43.     }

Regards
Viktor

 

The attributes on the properties you listed are switched around. It should be:

Code (Boo):

1. [MainColor] _BaseColor("Base Color", Color) = (1,1,1,1)
2. [MainTexture] _BaseMap("Base Map (RGB) Smoothness / Alpha (A)", 2D) = "white" {}
3.  

Alternatively, you can always be explicit by using Material.GetColor("_BaseColor") or Material.GetTexture("_BaseMap")

 

Thanks man! That was so obviously there, but not for Shadergraph noob like me

 

It's the source code for the SimpleLit shader in the URP package.
And it worked before I update to 2019.3.14f1 (and URP 7.3.1)
Now I have the same error as @viktorkadza
So I have to change this in source code ( ProjectName//Library/PackageCache/com.unity.render-pipelines.universal@7.3.1/Shaders/SimpleLit.shader).
This error is still in the URP master branch on Github...

 

The issue is in the source code of URP