after module install blank white page

[dziakuzis]

Hi, i have tried to install migrationpro module, but when i have uploaded it on to modules page, modules page became blank white page and i can't see any modules, my prestashop version 1.5.4.1. can somebody tell me what to do? how to fix?

[prestamonste]

Hi there,

In your case, please access to your hosting via cpanel or ftp account. After that, go to file config/defines.inc.php, change the line code:

define('_PS_MODE_DEV_', false);

To 

define('_PS_MODE_DEV_', true);

Save this file and reload modules page. Now you can see the error.

Best regards,