CodeIgniter更改base_url

Question

I'm new to using PHP and CodeIgniter. I have a folder named ePOD inside the htdocs which is fully working and I've copied all the content of it (ePOD folder) to another empty folder name which is ePODglobe. Both of these folders are inside the htdocs.

I've changed the base_url inside the ePODglobe folder and as I've tested the base_url it returned an Object Not Found Error. Aside from the base_url of ePODglobe, what else should I need to check and modify to make it working?

base_url inside ePOD folder(this is the original and working base_url):

$config['base_url'] = 'http://localhost/ePOD/';

base_url inside ePODglobe folder:

$config['base_url'] = 'http://localhost/ePODglobe/';