diff --git a/src/Cnblogs.DashScope.Core/OpenAiErrorResponse.cs b/src/Cnblogs.DashScope.Core/OpenAiErrorResponse.cs
index d91020e..0715dd1 100644
--- a/src/Cnblogs.DashScope.Core/OpenAiErrorResponse.cs
+++ b/src/Cnblogs.DashScope.Core/OpenAiErrorResponse.cs
@@ -1,3 +1,7 @@
 namespace Cnblogs.DashScope.Core;
 
+/// <summary>
+/// Represents an error response from DashScope compatible-mode API.
+/// </summary>
+/// <param name="Error">Error detail.</param>
 public record OpenAiErrorResponse(OpenAiError Error);
diff --git a/test/Cnblogs.DashScope.Sdk.UnitTests/ErrorTests.cs b/test/Cnblogs.DashScope.Sdk.UnitTests/ErrorTests.cs
index 497247d..e660852 100644
--- a/test/Cnblogs.DashScope.Sdk.UnitTests/ErrorTests.cs
+++ b/test/Cnblogs.DashScope.Sdk.UnitTests/ErrorTests.cs
@@ -85,7 +85,7 @@ public async Task Error_OpenAiCompatibleError_ExceptionAsync()
     {
         // Arrange
         var testCase = Snapshots.Error.UploadErrorNoSse;
-        var (client, handler) = await Sut.GetTestClientAsync(false, testCase);
+        var (client, _) = await Sut.GetTestClientAsync(false, testCase);
 
         // Act
         var act = async () => await client.UploadFileAsync(