PHP Fatal error

Hello,

My site is having issues and when consulting the error log, I see the following message:

[10-Oct-2021 15:45:05 UTC] PHP Fatal error:  Uncaught PDOException: SQLSTATE[HY000]: General error: 2006 MySQL server has gone away in /home2/tierram3/public_html/wp-content/plugins/mailpoet/vendor-prefixed/doctrine/dbal/lib/Doctrine/DBAL/Driver/PDOStatement.php:2
Stack trace:
#0 /home2/tierram3/public_html/wp-content/plugins/mailpoet/vendor-prefixed/doctrine/dbal/lib/Doctrine/DBAL/Driver/PDOStatement.php(2): PDOStatement->execute(NULL)
#1 /home2/tierram3/public_html/wp-content/plugins/mailpoet/vendor-prefixed/doctrine/dbal/lib/Doctrine/DBAL/Connection.php(2): MailPoetVendor\Doctrine\DBAL\Driver\PDOStatement->execute()
#2 /home2/tierram3/public_html/wp-content/plugins/mailpoet/vendor-prefixed/doctrine/orm/lib/Doctrine/ORM/Persisters/Entity/BasicEntityPersister.php(2): MailPoetVendor\Doctrine\DBAL\Connection->executeQuery('SELECT t0.name ...', Array, Array)
#3 /home2/tierram3/public_html/wp-content/plugins/mailpoet/vendor-prefixed/doctrine/orm/lib/Doctrine/ORM/EntityRepository.php(2): MailPoetVendor\Doctrine\ORM\Persisters\Entity\BasicEntityPersister->lo in /home2/tierram3/public_html/wp-content/plugins/mailpoet/vendor-prefixed/doctrine/dbal/lib/Doctrine/DBAL/Driver/AbstractMySQLDriver.php on line 2

Can you please advise me what to do?

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