Warning: mysql_pconnect(): Lost connection to MySQL server at 'reading initial communication packet'

Hello, I wanted to report the following error, when opening the home page.

Warning: mysql_pconnect(): Lost connection to MySQL server at 'reading initial communication packet', system error: 111 in /adodb/drivers/adodb-mysql.inc.php on line 403 Warning: Cannot modify header information - headers already sent by (output started at /adodb/drivers/adodb-mysql.inc.php:403) in /include/utils/utils.php on line 4017 Warning: session_start(): Cannot send session cache limiter - headers already sent (output started at /adodb/drivers/adodb-mysql.inc.php:403) in /index.php on line 80 Warning: Cannot modify header information - headers already sent by (output started at /adodb/drivers/adodb-mysql.inc.php:403) in /index.php on line 98 Warning: Cannot modify header information - headers already sent by (output started at /adodb/drivers/adodb-mysql.inc.php:403) in /index.php on line 142

Can you give me feedback to resolve the error? Thanks

The MySQL service is supplied by the provider REGISTER and seems to work properly. Is there any command to restart the MySQL service?

regards