ngx-scanner: NullInjectorError: No provider for IterableDiffers!

I get an error when i try the basic example: Unhandled Promise rejection: StaticInjectorError(AppModule)[NgClass -> IterableDiffers]: StaticInjectorError(Platform: core)[NgClass -> IterableDiffers]: NullInjectorError: No provider for IterableDiffers! ; Zone: angular ; Task: Promise.then ; Value: Error: StaticInjectorError(AppModule)[NgClass -> IterableDiffers]: StaticInjectorError(Platform: core)[NgClass -> IterableDiffers]:

Versions: Angular CLI: 1.7.3 Node: 9.4.0 OS: win32 x64 Angular: 5.2.8 … animations, common, compiler, compiler-cli, core, forms … http, platform-browser, platform-browser-dynamic … platform-server, router

@angular/cdk: 5.2.4
@angular/cli: 1.7.3
@angular/material: 5.2.4
@angular-devkit/build-optimizer: 0.3.2
@angular-devkit/core: 0.3.2
@angular-devkit/schematics: 0.3.2
@ngtools/json-schema: 1.2.0
@ngtools/webpack: 1.10.2
@schematics/angular: 0.3.2
@schematics/package-update: 0.3.2
typescript: 2.6.2
webpack: 3.11.0

am i missing something?