error when copy tree

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Hi,

When i try to copy tree from ENG to FR concrete5 returns an error like the one below (i got the same error trying to empty the trash) :

Warning: mysql_query(): Access denied for user ''@'localhost' (using password: NO) in /home/asevtravel/public_html/AMW-2017/concrete/libraries/3rdparty/Zend/Db/Adapter/Mysql.php on line 127
Warning: mysql_query(): A link to the server could not be established in /home/asevtravel/public_html/AMW-2017/concrete/libraries/3rdparty/Zend/Db/Adapter/Mysql.php on line 127
Warning: Cannot modify header information - headers already sent by (output started at /home/asevtravel/public_html/AMW-2017/concrete/libraries/3rdparty/Zend/Db/Adapter/Mysql.php:127) in /home/asevtravel/public_html/AMW-2017/concrete/core/libraries/view.php on line 657


I notice also that i cant create new pages at the root of the sitemap.
When i create the page i can enter name and description and then as soon as i click on the Add Page button i'm redirected to the homepage of the website and nothing as been created in the Sitemap.

I try to figure out from where it comes from but i have no idea.
If you can help me would be nice. I can provide connection to the dashboard details if needed.

chrismodlao