diff --git a/packages/hydrooj/src/handler/manage.ts b/packages/hydrooj/src/handler/manage.ts
index 6a9c2a9c9..fcc37d615 100644
--- a/packages/hydrooj/src/handler/manage.ts
+++ b/packages/hydrooj/src/handler/manage.ts
@@ -148,7 +148,7 @@ class SystemSettingHandler extends SystemHandler {
         const raw = system.get('_') || '';
         let config = yaml.load(raw);
         const valid = validator(config);
-        if (!(raw?.trim() && valid)) {
+        if (!(raw.trim() && valid)) {
             const data = {};
             for (const key in schema.properties) {
                 data[key] = {};
diff --git a/packages/ui-default/components/editor/index.ts b/packages/ui-default/components/editor/index.ts
index c7a61f5e8..edd58d57b 100644
--- a/packages/ui-default/components/editor/index.ts
+++ b/packages/ui-default/components/editor/index.ts
@@ -1,5 +1,4 @@
 import _ from 'lodash';
-import { Range } from 'monaco-editor';
 import DOMAttachedObject from 'vj/components/DOMAttachedObject';
 
 export const config = {