diff --git a/agent/component/iterationitem.py b/agent/component/iterationitem.py
index 83713aedb7..fad4a44e98 100644
--- a/agent/component/iterationitem.py
+++ b/agent/component/iterationitem.py
@@ -69,7 +69,7 @@ class IterationItem(ComponentBase, ABC):
             if p._id != pid:
                 continue
 
-            if p.component_name.lower() in ["categorize", "message", "switch", "userfillup", "interationitem"]:
+            if p.component_name.lower() in ["categorize", "message", "switch", "userfillup", "iterationitem"]:
                 continue
 
             for k, o in p._param.outputs.items():
diff --git a/rag/raptor.py b/rag/raptor.py
index 72e9412968..5d952dc428 100644
--- a/rag/raptor.py
+++ b/rag/raptor.py
@@ -91,7 +91,7 @@ class RecursiveAbstractiveProcessing4TreeOrganizedRetrieval:
             return response
         embds, _ = await thread_pool_exec(self._embd_model.encode, [txt])
         if len(embds) < 1 or len(embds[0]) < 1:
-            raise Exception("Embedding error: ")
+            raise Exception("Embedding error: empty embeddings returned")
         embds = embds[0]
         await thread_pool_exec(set_embed_cache, self._embd_model.llm_name, txt, embds)
         return embds