Issue: Unable to link with 'dataSource' as it is not a recognized feature of 'mat-tree'

Upon following the example provided at https://material.angular.io/components/tree/overview, I encountered an error when trying to implement it as described. The specific error message is:

Can't bind to 'dataSource' since it isn't a known property of 'mat-tree'.
1. If 'mat-tree' is an Angular component and it has 'dataSource' input, then verify that it is part of this module.
2. If 'mat-tree' is a Web Component then add 'CUSTOM_ELEMENTS_SCHEMA' to the '@NgModule.schemas' of this component to suppress this message.

To resolve this issue, I included both 

import {CdkTreeModule} from '@angular/cdk/tree';

as well as

import {MatTreeModule} from '@angular/material';

The versions I am currently using are:

"@angular/animations": "^6.0.6",
"@angular/cdk": "^6.3.0",
"@angular/common": "^6.0.6",
"@angular/compiler": "^6.0.6",
"@angular/core": "^6.0.6",
"@angular/forms": "^6.0.6",
"@angular/http": "^6.0.6",
"@angular/material": "^6.3.0",

If you have any insights on how to solve this problem despite having followed these steps, please share your suggestions. I have already attempted various solutions suggested by others but to no avail.

angulartypescriptangular-materialangular-material2angular6

Answer №1

The reason for this issue could be that you forgot to include CdkTreeModule and MatTreeModule in the module.ts file associated with the component.

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