diff --git a/packages/designer/src/designer/designer.ts b/packages/designer/src/designer/designer.ts
index 4bb1a0d9f..664baa0d6 100644
--- a/packages/designer/src/designer/designer.ts
+++ b/packages/designer/src/designer/designer.ts
@@ -394,7 +394,7 @@ export class Designer {
     this._componentMetasMap.forEach((config, key) => {
       const metaData = config.getMetadata();
       if (metaData.devMode === 'lowcode') {
-        maps[key] = this.currentDocument?.simulator?.createComponent(metaData.schema);
+        maps[key] = this.currentDocument?.simulator?.createComponent(metaData.schema!);
       } else {
         const view = metaData.experimental?.view;
         if (view) {