Jika muncul error 500 Internal server Error
Solusi :
Hapus htaccess di root public_html

Cek isi htaccess didalam folder aplikasi dan copy paste kode dibawah ini :
<IfModule mod_rewrite.c>
    RewriteEngine on
    RewriteBase /
    RewriteRule ^$ webroot/ [L]
    RewriteRule (.*) webroot/$1 [L]
</IfModule>