Error 'MySQL server has gone away' during installation in Magento

Details

During installation, the following message displays:

MySQL server has gone away

Solution:

Set the value of table_open_cache to a value of at least 250 as follows:

1. As a user with root privileges, open the MySQL configuration file in a text editor.
   Ubuntu 16: /etc/mysql/mysql.conf.d/mysqld.cnf
   Ubuntu earlier than 16: /etc/mysql/my.cnf
   CentOS: /etc/my.cnf
2. Search for an existing table_open_cache setting. If there is none, add one.
3. Set the value to at least 250:

   table_open_cache=250
   
4. Save your changes to my.cnf and exit the text editor.
5. As a user with root privileges, restart the MySQL service:
   Ubuntu: service mysql restart
   CentOS: service mysqld restart