diff --git a/agent/canvas.py b/agent/canvas.py
index b0e9edbf4..6c99b4d8e 100644
--- a/agent/canvas.py
+++ b/agent/canvas.py
@@ -481,7 +481,7 @@ class Canvas(Graph):
         except Exception as e:
             logging.exception(e)
 
-    def add_refernce(self, chunks: list[object], doc_infos: list[object]):
+    def add_reference(self, chunks: list[object], doc_infos: list[object]):
         if not self.retrieval:
             self.retrieval = [{"chunks": {}, "doc_aggs": {}}]
 
diff --git a/agent/tools/base.py b/agent/tools/base.py
index 8e6b78dd0..0d946a696 100644
--- a/agent/tools/base.py
+++ b/agent/tools/base.py
@@ -166,7 +166,7 @@ class ToolBase(ComponentBase):
                 "count": 1,
                 "url": url
             })
-        self._canvas.add_refernce(chunks, aggs)
+        self._canvas.add_reference(chunks, aggs)
         self.set_output("formalized_content", "\n".join(kb_prompt({"chunks": chunks, "doc_aggs": aggs}, 200000, True)))
 
     def thoughts(self) -> str:
diff --git a/agent/tools/crawler.py b/agent/tools/crawler.py
index b3601b10b..869fae4a3 100644
--- a/agent/tools/crawler.py
+++ b/agent/tools/crawler.py
@@ -64,5 +64,5 @@ class Crawler(ToolBase, ABC):
             elif self._param.extract_type == 'markdown':
                 return result.markdown
             elif self._param.extract_type == 'content':
-                result.extracted_content
+                return result.extracted_content
             return result.markdown
diff --git a/agent/tools/deepl.py b/agent/tools/deepl.py
index 31e92729c..41d12341d 100644
--- a/agent/tools/deepl.py
+++ b/agent/tools/deepl.py
@@ -43,7 +43,7 @@ class DeepLParam(ComponentParamBase):
 
 
 class DeepL(ComponentBase, ABC):
-    component_name = "GitHub"
+    component_name = "DeepL"
 
     def _run(self, history, **kwargs):
         ans = self.get_input()
diff --git a/agent/tools/retrieval.py b/agent/tools/retrieval.py
index 27ddfe4b2..a6e1e4fcd 100644
--- a/agent/tools/retrieval.py
+++ b/agent/tools/retrieval.py
@@ -163,7 +163,7 @@ class Retrieval(ToolBase, ABC):
             self.set_output("formalized_content", self._param.empty_response)
             return
 
-        self._canvas.add_refernce(kbinfos["chunks"], kbinfos["doc_aggs"])
+        self._canvas.add_reference(kbinfos["chunks"], kbinfos["doc_aggs"])
         form_cnt = "\n".join(kb_prompt(kbinfos, 200000, True))
         self.set_output("formalized_content", form_cnt)
         return form_cnt