Hello Sir,
I have gone through your requirement and I am sure I can do this. It error shows because of server 500 error and class is not found. i can solve these problem for $30.
I am Full Stack Developer with 9 Years of Experience in PHP, Wordpress, Magento, Joomla, Moodle, Drupal, MySQL, JavaScript, HTML and CSS coding.
I am open to answer all your question. Looking forward to hear something positive from your side.
Have a nice day.
Regards,
Amit