diff --git a/packages/engine/README-zh_CN.md b/packages/engine/README-zh_CN.md
index 089ffb228..b668821ca 100644
--- a/packages/engine/README-zh_CN.md
+++ b/packages/engine/README-zh_CN.md
@@ -12,7 +12,7 @@
 
 [![NPM version][npm-image]][npm-url] [![NPM downloads][download-image]][download-url]
 
-[![Discussions][discussions-image]][discussions-url] [![][issues-helper-image]][issues-helper-url] [![Issues need help][help-wanted-image]][help-wanted-url]
+ [![][issues-helper-image]][issues-helper-url] [![Issues need help][help-wanted-image]][help-wanted-url]
 
 [npm-image]: https://img.shields.io/npm/v/@alilc/lowcode-engine.svg?style=flat-square
 [npm-url]: http://npmjs.org/package/@alilc/lowcode-engine
@@ -21,8 +21,6 @@
 [download-url]: https://npmjs.org/package/@alilc/lowcode-engine
 [help-wanted-image]: https://flat.badgen.net/github/label-issues/alibaba/lowcode-engine/help%20wanted/open
 [help-wanted-url]: https://github.com/alibaba/lowcode-engine/issues?q=is%3Aopen+is%3Aissue+label%3A%22help+wanted%22
-[discussions-image]: https://img.shields.io/badge/discussions-on%20github-blue?style=flat-square
-[discussions-url]: https://github.com/alibaba/lowcode-engine/discussions
 
 [issues-helper-image]: https://img.shields.io/badge/using-issues--helper-orange?style=flat-square
 [issues-helper-url]: https://github.com/actions-cool/issues-helper
diff --git a/packages/engine/README.md b/packages/engine/README.md
index 627fbf638..01a1c9558 100644
--- a/packages/engine/README.md
+++ b/packages/engine/README.md
@@ -12,7 +12,7 @@ An enterprise-class low-code technology stack with scale-out design
 
 [![NPM version][npm-image]][npm-url] [![NPM downloads][download-image]][download-url]
 
-[![Discussions][discussions-image]][discussions-url] [![][issues-helper-image]][issues-helper-url] [![Issues need help][help-wanted-image]][help-wanted-url]
+[![][issues-helper-image]][issues-helper-url] [![Issues need help][help-wanted-image]][help-wanted-url]
 
 [npm-image]: https://img.shields.io/npm/v/@alilc/lowcode-engine.svg?style=flat-square
 [npm-url]: http://npmjs.org/package/@alilc/lowcode-engine
@@ -21,8 +21,6 @@ An enterprise-class low-code technology stack with scale-out design
 [download-url]: https://npmjs.org/package/@alilc/lowcode-engine
 [help-wanted-image]: https://flat.badgen.net/github/label-issues/alibaba/lowcode-engine/help%20wanted/open
 [help-wanted-url]: https://github.com/alibaba/lowcode-engine/issues?q=is%3Aopen+is%3Aissue+label%3A%22help+wanted%22
-[discussions-image]: https://img.shields.io/badge/discussions-on%20github-blue?style=flat-square
-[discussions-url]: https://github.com/alibaba/lowcode-engine/discussions
 
 [issues-helper-image]: https://img.shields.io/badge/using-issues--helper-orange?style=flat-square
 [issues-helper-url]: https://github.com/actions-cool/issues-helper
diff --git a/packages/shell/src/material.ts b/packages/shell/src/material.ts
index 6fc4413b2..46b25beab 100644
--- a/packages/shell/src/material.ts
+++ b/packages/shell/src/material.ts
@@ -105,8 +105,6 @@ export default class Material {
     return isComponentMeta(obj);
   }
 
-
-
   /**
    * 获取所有已注册的物料元数据
    * @returns
@@ -114,7 +112,7 @@ export default class Material {
   getComponentMetasMap() {
     const map = new Map<string, ComponentMeta>();
     const originalMap = this[designerSymbol].getComponentMetasMap();
-    for (let componentName in originalMap.keys()) {
+    for (let componentName of originalMap.keys()) {
       map.set(componentName, this.getComponentMeta(componentName)!);
     }
     return map;