added image_name to PlateOrder model

sse/auth_utils.py

@@ -108,7 +108,7 @@ def validate_sse_request(request):
     """
     auth_result = authenticate_sse_request(request)
     if not auth_result:
-        return False, HttpResponseForbidden("认证失败或用户无关联商户")
+        return False, HttpResponseForbidden("Authentication failed or user has no associated merchant")
     
     user, merchant_id = auth_result
     request.user = user