Output value 'vert' is not completely initialized

So I am trying the shader graph thing.

I have the following Graph :

Now it’s very frustrating, cause It should work but Unity keep telling me that

Output value ‘vert’ is not completely initialized

I tried simple shaders, just like a color and the PBR Master, I tried clearing cache, reopening a project … It still throw the error…

I don’t know what to do to fix it.

got my answer => https://forum.unity.com/threads/output-value-vert-is-not-completely-initialized.763436/

But currently being fixed.