fix issue with query related to carbon receiving null results in sprints.blade.php
fix issue with query related to carbon receiving null results in sprints.blade.php

gitscrum-community-edition/laravel-gitscrum,alfa6661/laravel-gitscrum,gitscrum-community-edition/laravel-gitscrum,alfa6661/laravel-gitscrum,gitscrum-community-edition/laravel-gitscrum,renatomarinho/laravel-gitscrum,renatomarinho/laravel-gitscrum,alfa6661/laravel-gitscrum,renatomarinho/laravel-gitscrum