MySQL error

Hello,

I am using the latest version of your plugin, and I am now getting this error in my WordPress admin. I tried desinstalling and reinstalling, but I still get the same error (it does not allow me to reactivate it after reinstallation because of the fatal error below). Any idea where the issue might come from? Apart from this, my site works as usual.
Thanks for your help!

Warning: PDOStatement::execute(): MySQL server has gone away in /home/XXX/www/wp-content/plugins/mailpoet/vendor/j4mie/idiorm/idiorm.php on line 505

Warning: PDOStatement::execute(): Error reading result set’s header in /home/XXX/www/wp-content/plugins/mailpoet/vendor/j4mie/idiorm/idiorm.php on line 505

Fatal error: Uncaught PDOException: SQLSTATE[HY000]: General error: 2006 MySQL server has gone away in /home/XXX/www/wp-content/plugins/mailpoet/vendor/j4mie/idiorm/idiorm.php:505 Stack trace: #0 /home/XXX/www/wp-content/plugins/mailpoet/vendor/j4mie/idiorm/idiorm.php(505): PDOStatement->execute() #1 /home/XXX/www/wp-content/plugins/mailpoet/vendor/j4mie/idiorm/idiorm.php(1909): ORM::_execute(‘SELECT * FROM `…’, Array, ‘default’) #2 /home/XXX/www/wp-content/plugins/mailpoet/vendor/j4mie/idiorm/idiorm.php(687): ORM->_run() #3 /home/XXX/www/wp-content/plugins/mailpoet/vendor/j4mie/paris/paris.php(145): ORM->find_one(NULL) #4 /home/XXX/www/wp-content/plugins/mailpoet/vendor/j4mie/idiorm/idiorm.php(2269): ORMWrapper->find_one() #5 /home/XXX/www/wp-content/plugins/mailpoet/lib/Models/Segment.php(108): ORM->__call(‘findOne’, Array) #6 /home/XXX/www/wp-content/plugins/mailpoet/lib/Config/Populator.php(193): MailPoet\Models\Segment::getWPSegment() #7 /home/XXX/www/wp-content/plugins/ in /home/XXX/www/wp-content/plugins/mailpoet/vendor/j4mie/idiorm/idiorm.php on line 505