diff --git a/webui_pages/knowledge_base/knowledge_base.py b/webui_pages/knowledge_base/knowledge_base.py
index f059475..89e274c 100644
--- a/webui_pages/knowledge_base/knowledge_base.py
+++ b/webui_pages/knowledge_base/knowledge_base.py
@@ -118,7 +118,7 @@ def knowledge_base_page(api: ApiRequest):
                     vector_store_type=vs_type,
                     embed_model=embed_model,
                 )
-                st.toast(ret["msg"])
+                st.toast(ret.get("msg", " "))
                 st.session_state["selected_kb_name"] = kb_name
                 st.experimental_rerun()
 
@@ -140,10 +140,10 @@ def knowledge_base_page(api: ApiRequest):
         ):
             for f in files:
                 ret = api.upload_kb_doc(f, kb)
-                if ret["code"] == 200:
-                    st.toast(ret["msg"], icon="✔")
-                else:
-                    st.toast(ret["msg"], icon="✖")
+                if msg := check_success_msg(ret):
+                    st.toast(msg, icon="✔")
+                elif msg := check_error_msg(ret):
+                    st.toast(msg, icon="✖")
             st.session_state.files = []
 
         st.divider()
@@ -235,7 +235,7 @@ def knowledge_base_page(api: ApiRequest):
             ):
                 for row in selected_rows:
                     ret = api.delete_kb_doc(kb, row["file_name"], True)
-                    st.toast(ret["msg"])
+                    st.toast(ret.get("msg", " "))
                 st.experimental_rerun()
 
         st.divider()
@@ -262,6 +262,6 @@ def knowledge_base_page(api: ApiRequest):
                 use_container_width=True,
         ):
             ret = api.delete_knowledge_base(kb)
-            st.toast(ret["msg"])
+            st.toast(ret.get("msg", " "))
             time.sleep(1)
             st.experimental_rerun()
diff --git a/webui_pages/utils.py b/webui_pages/utils.py
index 3e67ed7..cc38ef5 100644
--- a/webui_pages/utils.py
+++ b/webui_pages/utils.py
@@ -232,15 +232,15 @@ class ApiRequest:
             msg = f"无法连接API服务器，请确认已执行python server\\api.py"
             logger.error(msg)
             logger.error(e)
-            yield {"code": 500, "errorMsg": msg}
+            yield {"code": 500, "msg": msg}
         except httpx.ReadTimeout as e:
             msg = f"API通信超时，请确认已启动FastChat与API服务（详见RADME '5. 启动 API 服务或 Web UI'）"
             logger.error(msg)
             logger.error(e)
-            yield {"code": 500, "errorMsg": msg}
+            yield {"code": 500, "msg": msg}
         except Exception as e:
             logger.error(e)
-            yield {"code": 500, "errorMsg": str(e)}
+            yield {"code": 500, "msg": str(e)}
 
     # 对话相关操作
 
@@ -394,7 +394,7 @@ class ApiRequest:
             return response.json()
         except Exception as e:
             logger.error(e)
-            return {"code": 500, "errorMsg": errorMsg or str(e)}
+            return {"code": 500, "msg": errorMsg or str(e)}
 
     def list_knowledge_bases(
         self,
@@ -626,7 +626,22 @@ def check_error_msg(data: Union[str, dict, list], key: str = "errorMsg") -> str:
     '''
     return error message if error occured when requests API
     '''
-    if isinstance(data, dict) and key in data:
+    if isinstance(data, dict):
+        if key in data:
+            return data[key]
+        if "code" in data and data["code"] != 200:
+            return data["msg"]
+    return ""
+
+
+def check_success_msg(data: Union[str, dict, list], key: str = "msg") -> str:
+    '''
+    return error message if error occured when requests API
+    '''
+    if (isinstance(data, dict)
+        and key in data
+        and "code" in data
+        and data["code"] == 200):
         return data[key]
     return ""