Angular Material多选组件导入后仍报NgModule导出错误，编译失败求助
2026-7-6
关于Angular Material多选组件编译失败的问题
我尝试添加Angular Material的multi-select组件，已修改6个文件，但项目仍无法编译，出现以下错误：
- 错误截图1：
Can't bind to 'formControl' since it isn't a known property of 'mat-select' - 错误截图2：
'mat-select' is not a known element - 错误截图3：
Can't bind to 'value' since it isn't a known property of 'mat-option' - 错误截图4：
'mat-option' is not a known element - 错误截图5：
Can't bind to 'ngModel' since it isn't a known property of 'mat-select' - 错误截图6：
Property 'selectedOptions' does not exist on type 'ElementRef<HTMLSelectElement>' - 错误截图7：
'mat-label' is not a known element
请问为何项目无法编译？
内容的提问来源于stack exchange，提问作者Elad Benda
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