Hi,
It seems call to function is make in file but either file or function not found. Make sure you have uploaded all files web hosting server.
Do you have "fantastico" any other tool on web hosting cPanel/WHM to automatically install Prestashop.This will make installation easy.
PrestaShop Tutorials Videos [How to do Tasks]
https://www.prestashop.com/forums/topic/907438-prestashop-tutorials-videos-how-to-do-tasks/