diff --git a/server-rs/crates/platform-matting/src/lib.rs b/server-rs/crates/platform-matting/src/lib.rs
index e6107477d..b4f78d192 100644
--- a/server-rs/crates/platform-matting/src/lib.rs
+++ b/server-rs/crates/platform-matting/src/lib.rs
@@ -464,8 +464,7 @@ impl MattingClient {
 
         let result_image = self
             .segment_uploaded_input_to_rgba(image_url, source_dims, upload_dims)
-            .await
-            .map_err(|error| error.with_failure_stage("aliyun_segment"))?;
+            .await?;
         if upload_dims == source_dims {
             return encode_rgba_png(&result_image)
                 .map_err(|error| error.with_failure_stage("result_encode"));