phpunit method viaRemember doesnt exist – laravel 5.4 - development

phpunit method viaRemember doesnt exist – laravel 5.4

i am using laravel and php unit test, every time i ran the unit test it always show errors like this, i went deep through the framework and found nothing.

can somebody help? its so frustrating, thanks

here’s the error looks like

PHPUnit 5.7.26 by Sebastian Bergmann and contributors.

1)
TestsFeatureCreateCitiesTest::an_authenticated_user_can_create_a_city
BadMethodCallException: Method viaRemember does not exist.

from Laravel Questions and Answers https://laravelquestions.com/php/phpunit-method-viaremember-doesnt-exist-laravel-5-4/
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