Generated shader is gibberish

[mletera]

I'm trying to convert the following shader https://www.shadertoy.com/view/MdSfWK using Unity 2020.3.26f1 and receive the following error:

ArgumentNullException: Value cannot be null.
Parameter name: shader
UnityEngine.Material..ctor (UnityEngine.Shader shader) (at :0)
ShaderConverterEditor.CreateShader () (at Assets/Editor/ShaderConverterEditor.cs:110)
ShaderConverterEditor.OnGUI () (at Assets/Editor/ShaderConverterEditor.cs:51)
UnityEditor.HostView.OldOnGUI () (at <55729f52d042492e9efc384182ae2feb>:0)
UnityEngine.UIElements.IMGUIContainer.DoOnGUI (UnityEngine.Event evt, UnityEngine.Matrix4x4 parentTransform, UnityEngine.Rect clippingRect, System.Boolean isComputingLayout, UnityEngine.Rect layoutSize, System.Action onGUIHandler, System.Boolean canAffectFocus) (at :0)
UnityEngine.UIElements.IMGUIContainer.HandleIMGUIEvent (UnityEngine.Event e, UnityEngine.Matrix4x4 worldTransform, UnityEngine.Rect clippingRect, System.Action onGUIHandler, System.Boolean canAffectFocus) (at :0)
UnityEngine.UIElements.IMGUIContainer.HandleIMGUIEvent (UnityEngine.Event e, System.Action onGUIHandler, System.Boolean canAffectFocus) (at :0)
UnityEngine.UIElements.IMGUIContainer.HandleIMGUIEvent (UnityEngine.Event e, System.Boolean canAffectFocus) (at :0)
UnityEngine.UIElements.IMGUIContainer.SendEventToIMGUIRaw (UnityEngine.UIElements.EventBase evt, System.Boolean canAffectFocus, System.Boolean verifyBounds) (at :0)
UnityEngine.UIElements.IMGUIContainer.SendEventToIMGUI (UnityEngine.UIElements.EventBase evt, System.Boolean canAffectFocus, System.Boolean verifyBounds) (at :0)
UnityEngine.UIElements.IMGUIContainer.HandleEvent (UnityEngine.UIElements.EventBase evt) (at :0)
UnityEngine.UIElements.CallbackEventHandler.HandleEventAtTargetPhase (UnityEngine.UIElements.EventBase evt) (at :0)
UnityEngine.UIElements.MouseCaptureDispatchingStrategy.DispatchEvent (UnityEngine.UIElements.EventBase evt, UnityEngine.UIElements.IPanel panel) (at :0)
UnityEngine.UIElements.EventDispatcher.ApplyDispatchingStrategies (UnityEngine.UIElements.EventBase evt, UnityEngine.UIElements.IPanel panel, System.Boolean imguiEventIsInitiallyUsed) (at :0)
UnityEngine.UIElements.EventDispatcher.ProcessEvent (UnityEngine.UIElements.EventBase evt, UnityEngine.UIElements.IPanel panel) (at :0)
UnityEngine.UIElements.EventDispatcher.ProcessEventQueue () (at :0)
UnityEngine.UIElements.EventDispatcher.OpenGate () (at :0)
UnityEngine.UIElements.EventDispatcherGate.Dispose () (at :0)
UnityEngine.UIElements.EventDispatcher.ProcessEvent (UnityEngine.UIElements.EventBase evt, UnityEngine.UIElements.IPanel panel) (at :0)
UnityEngine.UIElements.EventDispatcher.Dispatch (UnityEngine.UIElements.EventBase evt, UnityEngine.UIElements.IPanel panel, UnityEngine.UIElements.DispatchMode dispatchMode) (at :0)
UnityEngine.UIElements.BaseVisualElementPanel.SendEvent (UnityEngine.UIElements.EventBase e, UnityEngine.UIElements.DispatchMode dispatchMode) (at :0)
UnityEngine.UIElements.UIElementsUtility.DoDispatch (UnityEngine.UIElements.BaseVisualElementPanel panel) (at :0)
UnityEngine.UIElements.UIElementsUtility.UnityEngine.UIElements.IUIElementsUtility.ProcessEvent (System.Int32 instanceID, System.IntPtr nativeEventPtr, System.Boolean& eventHandled) (at :0)
UnityEngine.UIElements.UIEventRegistration.ProcessEvent (System.Int32 instanceID, System.IntPtr nativeEventPtr) (at :0)
UnityEngine.UIElements.UIEventRegistration+<>c.<.cctor>b__1_2 (System.Int32 i, System.IntPtr ptr) (at :0)
UnityEngine.GUIUtility.ProcessEvent (System.Int32 instanceID, System.IntPtr nativeEventPtr, System.Boolean& result) (at <1c34070ddd5b426b8f32df1db927aad1>:0)

There is a CodeGenerator in the scene and I am supplying a shader name. The program will generate a shader file with the name but the contents are repetitive gibberish like the following line:

i.uvfi.uvri.uvai.uvgi.uvCi.uvoi.uvli.uvoi.uvri.uvSi.uvfi.uvri.uvai.uvgi.uvCi.uvoi.uvli.uvoi.uvri.uvhi.uvfi.uvri.uvai.uvgi.uvCi.uvoi.uvli.uvoi.uvri.uvai.uvfi.uvri.uvai.uvgi.uvCi.uvoi.uvli.uvoi.uvri.uvdi.uvfi.uvri.uvai.uvgi.uvCi.uvoi.uvli.uvoi.uvri.uvei.uvfi.uvri.uvai.uvgi.uvCi.uvoi.uvli.uvoi.uvri.uvri.uvfi.uvri.uvai.uvgi.uvCi.uvoi.uvli.uvoi.uvri.uv i.uvfi.uvri.uvai.uvgi.uvCi.uvoi.uvli.uvoi.uvri.uv"i.uvfi.uvri.uvai.uvgi.uvCi.uvoi.uvli.uvoi.uvri.uvSi.uvfi.uvri.uvai.uvgi.uvCi.uvoi.uvli.uvoi.uvri.uvhi.uvfi.uvri.uvai.uvgi.uvCi.uvoi.uvli.uvoi.uvri.uvai.uvfi.uvri.uvai.uvgi.uvCi.uvoi.uvli.uvoi.uvri.uvdi.uvfi.uvri.uvai.uvgi.uvCi.uvoi.uvli.uvoi.uvri.uvei.uvfi.uvri.uvai.uvgi.uvCi.uvoi.uvli.uvoi.uvri.uvri.uvfi.uvri.uvai.uvgi.uvCi.uvoi.uvli.uvoi.uvri.uvMi.uvfi.uvri.uvai.uvgi.uvCi.uvoi.uvli.uvoi.uvri.uvai.uvfi.uvri.uvai.uvgi.uvCi.uvoi.uvli.uvoi.uvri.uvni.uvfi.uvri.uvai.uvgi.uvCi.uvoi.uvli.uvoi.uvri.uv/i.uvfi.uvri.uvai.uvgi.uvCi.uvoi.uvli.uvoi.uvri.uvSi.uvfi.uvri.uvai.uvgi.uvCi.uvoi.uvli.uvoi.uvri.uvci.uvfi.uvri.uvai.uvgi.uvCi.uvoi.uvli.uvoi.uvri.uvri.uvfi.uvri.uvai.uvgi.uvCi.uvoi.uvli.uvoi.uvri.uvii.uvfi.uvri.uvai.uvgi.uvCi.uvoi.uvli.uvoi.uvri.uvbi.uvfi.uvri.uvai.uvgi.uvCi.uvoi.uvli.uvoi.uvri.uvbi.uvfi.uvri.uvai.uvgi.uvCi.uvoi.uvli.uvoi.uvri.uvli.uvfi.uvri.uvai.uvgi.uvCi.uvoi.uvli.uvoi.uvri.uvei.uvfi.uvri.uvai.uvgi.uvCi.uvoi.uvli.uvoi.uvri.uvSi.uvfi.uvri.uvai.uvgi.uvCi.uvoi.uvli.uvoi.uvri.uvhi.uvfi.uvri.uvai.uvgi.uvCi.uvoi.uvli.uvoi.uvri.uvai.uvfi.uvri.uvai.uvgi.uvCi.uvoi.uvli.uvoi.uvri.uvdi.uvfi.uvri.uvai.uvgi.uvCi.uvoi.uvli.uvoi.uvri.uvei.uvfi.uvri.uvai.uvgi.uvCi.uvoi.uvli.uvoi.uvri.uvri.uvfi.uvri.uvai.uvgi.uvCi.uvoi.uvli.uvoi.uvri.uv"i.uvfi.uvri.uvai.uvgi.uvCi.uvoi.uvli.uvoi.uvri.uv