image watermark not work in Codeigniter - codeigniter

Question

give text as a watermark on picture in codeigniter code can not run properly.
public function new()
{
$this->load->library('image_lib');
$config['sourse_image'] ='./SaveImage/fer.jpg';
$config['wm_text'] = 'SaleScrap';
$config['wm_type'] = 'text';
$config['wm_font_path'] = 'system/fonts/texb.ttf';
$config['wm_font_size'] = '16';
$config['wm_font_color'] = 'ffffff';
$config['wm_vrt_alignment'] = 'bottom';
$config['wm_hor_alignment'] = 'center';
$config['wm_padding'] = '20';
$this->image_lib->initialize($config);
if($this->image_lib->watermark())
{
echo "Success";
}
else
{
echo "Error";
}
}
code not work and can not give output when code run Log File give this Error
ERROR - 2018-08-29 11:49:54 --> You must specify a source image in your preferences.
ERROR - 2018-08-29 11:49:54 --> Your server does not support the GD function required to process this type of image.

Answer 1

SOLUTION 1
$config['sourse_image'] ='./SaveImage/fer.jpg';
correct spelling of source_image
SOLUTION 2.
You should try this structure:
$this->load->library('image_lib');
// Set your config up
$this->image_lib->initialize($config);
// Do your manipulation
$this->image_lib->clear();
If nothing works, the error might actually be the whole issue.
Check if you have gd installed, on linux you would do
sudo yum list installed | grep php
If not installed, install it
sudo yum install php-gd-package-name
RESTART your apache
sudo service httpd restart