Discover how to counter the white page of PrestaShop

Often you simply use your Prestashop site and after theinstallation of a new module or a hazardous maniputlation you end up with a page of all white backoffice or that is no longer appear the list of your modules.

Worse, your website in front ends up with a right under the left column or a footer to subscribers absent.

To finally know the truth about the little gremlins in your shop you simply activate the Prestashop error messages.

PrestaShop 1.4 and before

1. Use your usual FTP client to your hosting server /config/config.inc.php file
2. In this file go to it the optiondisplay_errors
   replaces @ini_set ('display_errors', 'off');
   by @ini_set('display_errors', 'on').
3. Save your file on your server
4. Refresh the page in your site in order to highlight the error message
5. If you don't understand the error message then head over to the official Prestashop forum to ask for help.

PrestaShop 1.5, PrestaShop 1.6

1. Use your usual FTP client to your hosting server /config/defines.inc.php file
2. In this file go to it the optiondisplay_errors
   replaces define('_PS_MODE_DEV_', false);
   by define('_PS_MODE_DEV_', true);
3. Save your file on your server
4. Refresh the page in your site in order to highlight the error message
5. If you don't understand the error message then head over to the official Prestashop forum to ask for help.

PrestaShop 1.7

from the backoffice:

1. Log on to your backoffice
2. Go to the page Advanced Parameters > Performance
3. Activate the Debug mode in the Debug section
   
4. Save this configuration
5. Remember to disable Debug mode after making your changes

If you don't have access to the backoffice :

1. Use your usual FTP client to open your /config/defines.inc.php file on your web hosting server.
2. In this file, set the display_errors option to ON.
   replaces define('_PS_MODE_DEV_', false);
   with define('_PS_MODE_DEV_', true);
3. Save your file on your server
4. Refresh the page of your site to highlight the error message.
5. If you don't understand the error message then go to the official Prestashop forum to ask for help.

PrestaShop Cloud

1. Use your usual FTP client to your hosting server /.htacess file
2. put the HTTP_PS_MODE_DEV_ constant to true
3. Save your file on your server
4. Refresh the page in your site in order to highlight the error message
5. If you don't understand the error message then head over to the official Prestashop forum to ask for help.