I enabled the errors in my wp-config file:
define(\'WP_DEBUG\', true);
But this not work, Wordpress continues showing me a white screen, a
You can write this into your .htaccess file.
php_flag display_startup_errors on php_flag display_errors on php_flag html_errors on php_flag log_errors on php_value error_log /home/path/public_html/domain/PHP_errors.log
Please change the error_log directory.