ng2-tree: Can't bind to 'tree' since it isn't a known property of 'tree'. ("

Can't bind to 'tree' since it isn't a known property of 'tree'. ("
   <tree [ERROR ->][tree]="tree"></tree>
   "): HomeComponent@1:9
'tree' is not a known element:
1. If 'tree' is an Angular component, then verify that it is part of this module.
2. If 'tree' is a Web Component then add "CUSTOM_ELEMENTS_SCHEMA" to the '@NgModule.schemas' of this component to suppress this message. ("
   [ERROR ->]<tree [tree]="tree"></tree>
   "): HomeComponent@1:3 ; Zone: <root> ; Task: Promise.then ; Value: Error: Template parse errors:(…) Error: Template parse errors:
Can't bind to 'tree' since it isn't a known property of 'tree'. ("
   <tree [ERROR ->][tree]="tree"></tree>
   "): HomeComponent@1:9
'tree' is not a known element:
1. If 'tree' is an Angular component, then verify that it is part of this module.
2. If 'tree' is a Web Component then add "CUSTOM_ELEMENTS_SCHEMA" to the '@NgModule.schemas' of this component to suppress this message. ("
   [ERROR ->]<tree [tree]="tree"></tree>
   "): HomeComponent@1:3

According to the tutorial in the readme, cannot normal use, the demoIn the code is dependent on the development kit, independence should do a simple example, it is easier to use