Step 1: Login to the cPanel
Step 2: Click the File Manager link found in the Files section
Step 3: Navigate to the document root directory of the Prestashop installation
Step 4: Now open the “cache” directory and go to the ‘smarty’ folder
Step 5: Now delete all the files in the ‘smarty’ folder except of index.php
Step 6: Load your website via browser and the new cache files will be created automatically by the Prestashop CMS