Material doesn't have a texture property '_MainTex' UnityEditor.DockArea:OnGUI()

I got this error after I lightmapping my scene, and I don’t think the lightmapping works because it’s just blank for me

Here’s the screenshot

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EDIT : I’ve heard that you need to restart Unity & PC, which I’ve done it, but didn’t work. Another thing is that I need to re-edit shader to fix the errors, I don’t know much about shader so I don’t know which shader should I edit …

Go see the shader and initialize it . The shader is trying to read a texture but there is none probably.

EDIT : I’ve fixed it, It’s just my issues with the plugins that I’m using. CLOSED