diff --git a/packages/plugins/@nocobase/plugin-field-sort/src/server/plugin.ts b/packages/plugins/@nocobase/plugin-field-sort/src/server/plugin.ts
index bd2fb66503..e61827c183 100644
--- a/packages/plugins/@nocobase/plugin-field-sort/src/server/plugin.ts
+++ b/packages/plugins/@nocobase/plugin-field-sort/src/server/plugin.ts
@@ -26,7 +26,7 @@ export class PluginFieldSortServer extends Plugin {
 
     this.app.dataSourceManager.beforeAddDataSource((dataSource: DataSource) => {
       // @ts-ignore
-      if (dataSource.collectionManager.db) {
+      if (dataSource.collectionManager?.db) {
         dataSource.resourceManager.registerActionHandlers({ move });
       }
     });