检查是否正确导入了该模块。如果该模块没有正确导入，那么其中所有的依赖和组件都无法正常工作。示例代码如下：

// app.module.ts import { NgModule } from '@angular/core'; import { BrowserModule } from '@angular/platform-browser'; import { AppComponent } from './app.component';

// 导入其他模块 import { OtherModule } from './other/other.module';

@NgModule({ declarations: [AppComponent], imports: [BrowserModule, OtherModule], // 确保正确导入 OtherModule providers: [], bootstrap: [AppComponent], }) export class AppModule {}

// other.module.ts import { NgModule } from '@angular/core'; import { CommonModule } from '@angular/common'; import { OtherComponent } from './other.component';

@NgModule({ declarations: [OtherComponent], imports: [CommonModule], exports: [OtherComponent], }) export class OtherModule {}

// other.component.ts import { Component } from '@angular/core';

@Component({ selector: 'app-other', template:

Other Component