diff --git a/website/handlers/alg_model/handler.py b/website/handlers/alg_model/handler.py
index 02b0823..2d6a9b5 100644
--- a/website/handlers/alg_model/handler.py
+++ b/website/handlers/alg_model/handler.py
@@ -29,12 +29,12 @@ class ClassificationAddHandler(APIHandler):
 
         with self.app_mysql.connect() as conn:
             cur = conn.execute(text("select id from model_classification where name=:name"), {"name": name})
-            classification_id = cur.fetchone()[0]
-            if classification_id:
+            row = db_mysql.to_json(cur)
+            if row:
                 raise errors.HTTPAPIError(errors.ERROR_BAD_REQUEST, "分类名称重复")
 
             conn.execute(
-                text("""insert into model_classification (name, created_at) values (:name, NOW())"""), {"name": name}
+                text("""insert into model_classification (name, create_time) values (:name, NOW())"""), {"name": name}
             )
 
         self.finish()
@@ -166,7 +166,7 @@ class AddHandler(APIHandler):
 
             conn.execute(
                 text(
-                    """insert into model (name, model_type, classification, comment, created_at) 
+                    """insert into model (name, model_type, classification, comment, create_time) 
                     values (:name, :model_type, :classification, :comment, NOW())"""),
                 {"name": name, "model_type": model_type, "classification": classification, "comment": comment}
             )
@@ -296,7 +296,7 @@ class VersionAddHandler(APIHandler):
                 text(
                     """
                     insert into model_version 
-                    (model_id, version, comment,model_file, config_file, config_str, created_at, update_time) 
+                    (model_id, version, comment,model_file, config_file, config_str, create_time, update_time) 
                     values (:model_id, :version, :comment, :model_file, :config_file, :config_str, NOW(), NOW())"""
                 ),
 
diff --git a/website/handlers/alg_model/url.py b/website/handlers/alg_model/url.py
index dbf9d31..6c2ecfe 100644
--- a/website/handlers/alg_model/url.py
+++ b/website/handlers/alg_model/url.py
@@ -16,7 +16,7 @@ handlers = [
     ("/model/version/edit", handler.VersionEditHandler),
     ("/model/version/list", handler.VersionListHandler),
     ("/model/version/info", handler.VersionInfoHandler),
-    ("//model/version/setdefault", handler.VersionSetDefaultHandler),
+    ("/model/version/setdefault", handler.VersionSetDefaultHandler),
     ("/model/version/delete", handler.VersionDeleteHandler),
 ]