:db_mysql:wrapper_single_mysql_stmt_execute: driver error (4031): The client was disconnected by the server because of inactivity. See wait_timeout and

:db_mysql:wrapper_single_mysql_stmt_execute: driver error (4031): The client

was disconnected by the server because of inactivity. See wait_timeout and

#mysql
interactive_timeout for configuring this behavior.
SHOW SESSION VARIABLES LIKE '%timeout%';
#config
sudo vim /etc/mysql/mysql.conf.d/mysqld.cnf
wait_timeout = 2880000
interactive_timeout = 2880000
sudo service mysql restart