mysqli_query(): MySQL server has gone away (Wordfence 6.2)

Hi, I updated Wordfence to 6.2 and now it gives me again the MySQL warnings that were solved in version 6.16/17. I already activated the new “use low resource” option.

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[Sep 28 11:25:04] Warning: mysqli_query(): MySQL server has gone away in /home/xxx/domains/xxx.it/public_html/wp-includes/wp-db.php on line 1868 Warning: mysqli_query(): Error reading result set’s header in /home/xxx/domains/xxx.it/public_html/wp-includes/wp-db.php on line 1868
[Sep 28 11:25:25] Warning: mysqli_query(): MySQL server has gone away in /home/xxx/domains/xxx.it/public_html/wp-includes/wp-db.php on line 1868 Warning: mysqli_query(): Error reading result set’s header in /home/xxx/domains/xxx.it/public_html/wp-includes/wp-db.php on line 1868 Fatal error: Call to a member function bind_param() on a non-object in /home/xxx/domains/xxx.it/public_html/wp-content/plugins/wordfence/lib/wfConfig.php on line 487
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Do you have any suggestion on how to fix it? Thank you.