未捕获错误：模板解析错误：
md-sidenav不是已知元素：
1.如果md-sidenav是Angular组件，请验证它是否为此模块的一部分。
2.如果md-sidenav是Web组件，则将CUSTOM_ELEMENTS_SCHEMA添加到此组件的@NgModule.schemas以禁止显示此消息。
("<md-sidenav-container class="example-container">
[ERROR ->]<md-sidenav #sidenav class="example-sidenav">
Jolly good!
</md-sidenav>
"): ng:///SharedModule/SidenavComponent.html@1:2
'md-sidenav-container' is not a known element:
1. If 'md-sidenav-container' is an Angular component, then verify that it is part of this module.
2. If 'md-sidenav-container' is a Web Component then add 'CUSTOM_ELEMENTS_SCHEMA' to the '@NgModule.schemas' of this component to suppress this message. ("[ERROR ->]<md-sidenav-container class="example-container">
<md-sidenav #sidenav class="example-sidenav">
"): ng:///SharedModule/SidenavComponent.html@0:0