diff --git a/backend/utils/nginx/components/config.go b/backend/utils/nginx/components/config.go
index 7f9b5bce9..7a0f5a409 100644
--- a/backend/utils/nginx/components/config.go
+++ b/backend/utils/nginx/components/config.go
@@ -35,6 +35,7 @@ var repeatKeys = map[string]struct {
 	"include":          {},
 	"sub_filter":       {},
 	"add_header":       {},
+	"error_page":       {},
 }
 
 func IsRepeatKey(key string) bool {