I want to ask. First of all, I will tell that I\'ve develop an application use codeIgniter on my windows dekstop. And it clear and run completely.
But, after I move
Codelgniter URL example :
example.com/class/function/id/
So check your class name correct or not, And call url instead of Capital A - Admin to admin.
Note: if you use codelgniter-3 version file name also must Should capital A. I mean Admin.php