Refused to execute script from '

I'm trying to do unit test for my code which is typescript/angular

I didn't modify any test codes(.spec.ts) yet, just tried to test like below:

$ ng test

But the browser gives me this error this error

I searched about this error message but I don't think there's proper answer for me.

Some people said this is about transpile problem of typescript, but I generated new angular project and that project test works well.

Below is my Karma.conf.js

// Karma configuration // Generated on Mon Apr 02 2018 18:00:29 GMT+0900 (대한민국 표준시)

module.exports = function(config) { config.set({

// base path that will be used to resolve all patterns (eg. files, exclude)
basePath: '',


// frameworks to use
// available frameworks: https://npmjs.org/browse/keyword/karma-adapter
frameworks: ['jasmine'],


// list of files / patterns to load in the browser
files: [
  '*.ts',
  'src/app/workflow/*.ts',
  'app/workflow/*.ts',
  'workflow/*.ts',
  'src/app/*.ts'

],


// list of files / patterns to exclude
exclude: [
  // 'src/app/workflow/*spec.ts'
],


// preprocess matching files before serving them to the browser
// available preprocessors: https://npmjs.org/browse/keyword/karma-preprocessor
preprocessors: {
},


// test results reporter to use
// possible values: 'dots', 'progress'
// available reporters: https://npmjs.org/browse/keyword/karma-reporter
reporters: ['progress'],


// web server port
port: 9876,


// enable / disable colors in the output (reporters and logs)
colors: true,


// level of logging
// possible values: config.LOG_DISABLE || config.LOG_ERROR || config.LOG_WARN || config.LOG_INFO || config.LOG_DEBUG
logLevel: config.LOG_INFO,


// enable / disable watching file and executing tests whenever any file changes
autoWatch: true,


// start these browsers
// available browser launchers: https://npmjs.org/browse/keyword/karma-launcher
browsers: ['Chrome'],


// Continuous Integration mode
// if true, Karma captures browsers, runs the tests and exits
singleRun: false,

// Concurrency level
// how many browser should be started simultaneous
concurrency: Infinity
})
}

Let me know what the problem is about.

Appreciate any comments.