Is there solution for this error message (karma-typescript)?

Question

When I run karma start I get this message:

Uncaught Error: Can't find entrypoint [/home/sample/sampleproj/test/base.spec.ts] (required by commonjs.js) at node_modules/karma-typescript/dist/client/commonjs.js:13:17

How to solve this?

import 'zone.js/dist/zone';
import 'zone.js/dist/long-stack-trace-zone';
import 'zone.js/dist/proxy';
import 'zone.js/dist/sync-test';
import 'zone.js/dist/jasmine-patch';
import 'zone.js/dist/async-test';
import 'zone.js/dist/fake-async-test';
import { TestBed } from '@angular/core/testing';
import { BrowserDynamicTestingModule, platformBrowserDynamicTesting } from '@angular/platform-browser-dynamic/testing';

TestBed.initTestEnvironment(BrowserDynamicTestingModule, platformBrowserDynamicTesting());