Angular 7 and can't bind to 'routerlink' since it isn't a known property of 'a'

The property routerLink is case sensitive.

change [routerlink] to [routerLink]

[routerLink]="['/vendors']"

For those people who have "routerLink" camel cased correctly and are still getting the same error, you probably have not imported RouterModule inside the module that defines your component.

import {RouterModule} from '@angular/router';
@NgModule({
   declarations:[YourComponents],
   imports:[RouterModule]
...