Try fixing it for real.

Lombiq.HelpfulLibraries.OrchardCore/ResourceManagement/HtmlShape.cs

@@ -1,3 +1,5 @@
+#nullable enable
+
 using Microsoft.AspNetCore.Html;
 using OrchardCore.DisplayManagement;
 using OrchardCore.DisplayManagement.Html;
@@ -19,13 +21,13 @@ public class HtmlShape : IHtmlContent, IPositioned, IShape
 
     private readonly IHtmlContent _value;
 
-    public string Position { get; set; }
+    public string? Position { get; set; }
 
     public ShapeMetadata Metadata { get; set; } = new();
 
-    public string Id { get; set; }
+    public string? Id { get; set; }
 
-    public string TagName { get; set; }
+    public string? TagName { get; set; }
 
     public IList<string> Classes => [];
 
@@ -35,14 +37,14 @@ public class HtmlShape : IHtmlContent, IPositioned, IShape
 
     public IReadOnlyList<IPositioned> Items => [];
 
-    public HtmlShape(IHtmlContent value, string position)
+    public HtmlShape(IHtmlContent? value, string? position = null)
     {
-        _value = value;
+        _value = value ?? new HtmlString(string.Empty);
         Position = position;
     }
 
-    public HtmlShape(string value, string position)
-        : this(new HtmlContentString(value), position)
+    public HtmlShape(string? value, string? position = null)
+        : this(new HtmlContentString(value ?? string.Empty), position)
     {
     }
 

Lombiq.HelpfulLibraries.OrchardCore/ResourceManagement/ScriptModuleResourceFilter.cs

@@ -24,10 +24,11 @@ public record ScriptModuleResourceFilter(ILayoutAccessor LayoutAccessor) : IAsyn
 {
     public async Task OnResultExecutionAsync(ResultExecutingContext context, ResultExecutionDelegate next)
     {
-        var html = DisplayScriptModuleResources(context.HttpContext.RequestServices);
-        var shape = new HtmlShape(html, "before");
+        if (DisplayScriptModuleResources(context.HttpContext.RequestServices) is { } html)
+        {
+            await LayoutAccessor.AddShapeToZoneAsync(CommonLocationNames.Content, new HtmlShape(html), "After");
+        }
 
-        await LayoutAccessor.AddShapeToZoneAsync("Content", shape, "After");
         await next();
     }