diff --git a/discount/init.py b/discount/init.py
index 60c57ce..71e31e3 100644
--- a/discount/init.py
+++ b/discount/init.py
@@ -18,7 +18,7 @@ async def discount_qrcode(request, params_kw):
     discount = params_kw.discount
     valid_term = params_kw.valid_term
     expired_date = params_kw.expired_date
-    env = ServerEnv()
+    env = request._run_ns
     dbname = env.get_module_dbname('discount')
     config = getConfig()
     db = DBPools()
@@ -537,7 +537,7 @@ async def disable_promo_code(request, params_kw):
 
 async def generate_promo_qr(request, params_kw):
     """Generate QR code for a promo code."""
-    env = ServerEnv()
+    env = request._run_ns
     dbname = env.get_module_dbname('discount')
     promo_id = params_kw.get('id', '')