I got mail notification about mysql error.

Hello,
I got mail notification about mysql error everyday.
It's error message.

Quote

Dear administrator,

This is an automatic email sent by i-MSCP:

Server name: ***
Server IP: ***
Version: 1.3.0
Build: 20160626
Message severity: error

==========================================================================
An error has been raised while executing function main::run in
/var/www/imscp/engine/traffic/imscp-vrl-traff:

main::run: MySQL server has gone away

main::run: MySQL server has gone away

main::run: MySQL server has gone away

main::run: MySQL server has gone away

==========================================================================

Please do not reply to this email.

___________________________
i-MSCP Mailer

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How to fix it?

Hello,
I has restart mysql service.I will check have this error message.
But I have another question.
Is the 1.3.0 can't login mysql use root account?Because I need backup database to another disk.How to enable root login mysql?

I also check command.

Quote

root@web1:~# mysql -u root -p
Enter password:
ERROR 1045 (28000): Access denied for user 'root'@'localhost' (using password: YES)

I make sure the password is correct.I another 1.3.0 imscp can't login mysql by root account with command.

Thanks your help
This command can login it.