I am using PHPBB3 on x10hosting and the front end works great
Only the ACP (admin panel) doens't work
I get the following error:

SQL ERROR [ mysqli ]

Lost connection to MySQL server during query [2013]

SQL

SELECT VERSION() AS mysql_version

BACKTRACE

FILE: includes/db/mysqli.php
LINE: 163
CALL: dbal->sql_error()

FILE: includes/functions_admin.php
LINE: 2991
CALL: dbal_mysqli->sql_query()

FILE: includes/acp/acp_main.php
LINE: 499
CALL: get_database_size()

FILE: includes/functions_module.php
LINE: 507
CALL: acp_main->main()

FILE: adm/index.php
LINE: 74