diff --git a/api/onnx_web/chain/pipeline.py b/api/onnx_web/chain/pipeline.py
index 1a6a597b..c785fce0 100644
--- a/api/onnx_web/chain/pipeline.py
+++ b/api/onnx_web/chain/pipeline.py
@@ -235,8 +235,9 @@ class ChainPipeline:
                     **kwargs,
                 )
 
+                metadata = stage_sources.metadata
                 stage_sources = StageResult(
-                    images=stage_results, metadata=stage_sources.metadata
+                    images=stage_results, metadata=metadata
                 )
             else:
                 logger.debug(
diff --git a/api/onnx_web/server/api.py b/api/onnx_web/server/api.py
index 1166c0dd..26777ce6 100644
--- a/api/onnx_web/server/api.py
+++ b/api/onnx_web/server/api.py
@@ -129,7 +129,7 @@ def image_reply(
     }
 
     if outputs is not None:
-        if metadata is not None:
+        if metadata is None:
             logger.error("metadata is required with outputs")
             return error_reply("metadata is required with outputs")