Update TbNavbar.php > TbCollapse alias error

When we create a TbNavbar with 'collapse" => true we get below error if we do not aplly my update:
"Alias « » is invalid. Make sure it points to an existing directory."

This is due to a wrong "\" before TbCollapse at line 107 in TbCollapse.php

Tested on php 5.4 windows & linux debian