wrong controller in my first CI 3

i just download CI and i take 2 folder application and system to my webfolder,
i move index.php to be inside application and i have modified the .htaccess

my webfolder is C:\onedrive\dropbox\template\
and my access url is http://localhost/template/application/index.php

but every time i open http://localhost/template/application/ always said :
404 Page Not Found, The page you requested was not found.

when i debugging to CodeIgniter.php

PHP Code:

var_dumpt($RTR->class); 


got

Code:

'template'

that why my url always wrong, why this is happened?

i just modify 'Router.php' in method '_set_request' in the first line to exclude my url for segmentation :

PHP Code:

        // akhyar : exclude url before index.php first
        $excSegment = explode('/',config_item('base_url'));
        $segments = array_diff($segments,array('index.php'));
        foreach ($excSegment as $idxSegment => $valSegment) {
            $segments = array_values(array_diff($segments,array(urlencode($valSegment))));
        } 


become :

PHP Code:

    protected function _set_request($segments = array())
    {
        // akhyar : exclude url before index.php first
        $excSegment = explode('/',config_item('base_url'));
        $segments = array_diff($segments,array('index.php'));
        foreach ($excSegment as $idxSegment => $valSegment) {
            $segments = array_values(array_diff($segments,array(urlencode($valSegment))));
        }

        $segments = $this->_validate_request($segments);

        // If we don't have any segments left - try the default controller;
        // WARNING: Directories get shifted out of the segments array!
        if (empty($segments))
        {
            $this->_set_default_controller();
            return;
        }

        if ($this->translate_uri_dashes === TRUE)
        {
            $segments[0] = str_replace('-', '_', $segments[0]);
            if (isset($segments[1]))
            {
                $segments[1] = str_replace('-', '_', $segments[1]);
            }
        }

        $this->set_class($segments[0]);
        if (isset($segments[1]))
        {
            $this->set_method($segments[1]);
        }
        else
        {
            $segments[1] = 'index';
        }

        array_unshift($segments, NULL);
        unset($segments[0]);
        $this->uri->rsegments = $segments;
    }