Steps to reproduce:
1. Create a new template project
2. Create blank Shadergraph
3. Observe the errors in console

Render Graph Execution error at pass SetGlobalColorForCustomPass (24)

InvalidOperationException: Trying to use a texture that was already released or not yet created. Make sure you declare it for reading in your pass or you don't read it before it's been written to at least once.
UnityEngine.Experimental.Rendering.RenderGraphModule.RenderGraphResourceRegistry.GetTexture (UnityEngine.Experimental.Rendering.RenderGraphModule.TextureHandle& handle) (at C:/GitHub/Graphics2/Graphics/com.unity.render-pipelines.core/Runtime/RenderGraph/RenderGraphResourceRegistry.cs:113)
UnityEngine.Experimental.Rendering.RenderGraphModule.TextureHandle.op_Implicit (UnityEngine.Experimental.Rendering.RenderGraphModule.TextureHandle texture) (at C:/GitHub/Graphics2/Graphics/com.unity.render-pipelines.core/Runtime/RenderGraph/RenderGraphResourceTexture.cs:53)
UnityEngine.Rendering.HighDefinition.HDRenderPipeline+<>c.<SetGlobalColorForCustomPass>b__1055_0 (UnityEngine.Rendering.HighDefinition.HDRenderPipeline+SetGlobalColorPassData data, UnityEngine.Experimental.Rendering.RenderGraphModule.RenderGraphContext context) (at C:/GitHub/Graphics2/Graphics/com.unity.render-pipelines.high-definition/Runtime/RenderPipeline/HDRenderPipeline.RenderGraph.cs:1225)
UnityEngine.Experimental.Rendering.RenderGraphModule.RenderGraphPass`1[PassData].Execute (UnityEngine.Experimental.Rendering.RenderGraphModule.RenderGraphContext renderGraphContext) (at C:/GitHub/Graphics2/Graphics/com.unity.render-pipelines.core/Runtime/RenderGraph/RenderGraphPass.cs:151)
UnityEngine.Experimental.Rendering.RenderGraphModule.RenderGraph.ExecuteCompiledPass (UnityEngine.Experimental.Rendering.RenderGraphModule.RenderGraph+CompiledPassInfo& passInfo, System.Int32 passIndex) (at C:/GitHub/Graphics2/Graphics/com.unity.render-pipelines.core/Runtime/RenderGraph/RenderGraph.cs:1334)
UnityEngine.GUIUtility:ProcessEvent(Int32, IntPtr, Boolean&)

Expected result: creating new Shadergraph should not cause any errors