diff --git a/api/app/core/workflow/nodes/http_request/config.py b/api/app/core/workflow/nodes/http_request/config.py
index 810a716f..9b41d9f2 100644
--- a/api/app/core/workflow/nodes/http_request/config.py
+++ b/api/app/core/workflow/nodes/http_request/config.py
@@ -76,7 +76,7 @@ class HttpContentTypeConfig(BaseModel):
         elif content_type in [HttpContentType.JSON] and not isinstance(v, str):
             raise ValueError("When content_type is JSON, data must be of type str")
         elif content_type in [HttpContentType.WWW_FORM] and not isinstance(v, dict):
-            raise ValueError("When content_type is x-www-form-urlencoded, data must be a object")
+            raise ValueError("When content_type is x-www-form-urlencoded, data must be an object(dict)")
         elif content_type in [HttpContentType.RAW, HttpContentType.BINARY] and not isinstance(v, str):
             raise ValueError("When content_type is raw/binary, data must be a string (File descriptor)")
         return v
diff --git a/api/app/templates/workflows/simple_qa/template.yml b/api/app/templates/workflows/simple_qa/template.yml
index 0843744d..2cf0f9b1 100644
--- a/api/app/templates/workflows/simple_qa/template.yml
+++ b/api/app/templates/workflows/simple_qa/template.yml
@@ -68,12 +68,7 @@ edges:
     label: 完成
 
 # 变量定义
-variables:
-  - name: user_question
-    type: string
-    required: true
-    description: 用户的问题
-    default: ""
+variables: []
 
 # 执行配置
 execution_config: