TDD/CSS & HTML testing issue

Hello everyone - I just ran into another issue related to CSS selector especially ‘.has-error’ I still cant find a solution. Anyone here ever dealt with this issue before? pls kindly help. I am stuck at this point below:

‘’‘selenium.common.exceptions.NoSuchElementException: Message: Unable to locate element: .has-error’‘’

Related code between my template/selenium:

Python part:

            "You can't have an empty list item"))```

html part:

        <div class="form-group has-error">
                <span class="help-block">{{ error }}</span>
            </div>
 {% endif %}