https://github.com/dotnet/aspnetcore/issues/62405

codingwithstephen · codingwithstephen · commit 1c95dbc846dc · 2025-07-25T23:42:52.000+01:00
diff --git a/src/Mvc/Mvc.Core/src/ProducesAttribute.cs b/src/Mvc/Mvc.Core/src/ProducesAttribute.cs
@@ -33,7 +33,7 @@ public ProducesAttribute(Type type)
     /// </summary>
     /// <param name="contentType">The allowed content type for a response.</param>
     /// <param name="additionalContentTypes">Additional allowed content types for a response.</param>
-    public ProducesAttribute(string? contentType, params string[] additionalContentTypes)
+    public ProducesAttribute(string contentType, params string[] additionalContentTypes)
     {
         ArgumentNullException.ThrowIfNull(contentType);
 

Original file line number	Diff line number	Diff line change
`@@ -33,7 +33,7 @@ public ProducesAttribute(Type type)`
`33`	`33`	`/// </summary>`
`34`	`34`	`/// <param name="contentType">The allowed content type for a response.</param>`
`35`	`35`	`/// <param name="additionalContentTypes">Additional allowed content types for a response.</param>`
`36`		`- public ProducesAttribute(string? contentType, params string[] additionalContentTypes)`
	`36`	`+ public ProducesAttribute(string contentType, params string[] additionalContentTypes)`
`37`	`37`	`{`
`38`	`38`	`ArgumentNullException.ThrowIfNull(contentType);`
`39`	`39`