Protractor automation button click inside ‘_ngcontent-c6’

My application has a button, with ‘_ngcontent-c6’ and i am unable to click in it.

element(by.css(“button[class*=’primary-btn’]”)).click()

The parent of button -span >class=”ng-star-inserted” is being located.

Message:

Failed: No element found using locator: By(css selector, button[class*='primary-btn'])

<b>
<span _ngcontent-c6="" title="" class="ng-star-inserted">
                                <button _ngcontent-c6="" class="button primary-btn">
                                    Create New Request
                                </button>
                            </span> 
</b>

Source: New feed
Source Url Protractor automation button click inside ‘_ngcontent-c6’