This message appears on debug.log and log files on my server.
Although, I have this message on log file generetaed by your plugin (option in admin of your plugin) : INSERT, , 100, firstname.lastname@example.org, Mon, 28 Jun 21 15:35:04 +0000 Error: ”
on each INSERT line.
The problem is that error overloads my server and make my site is down regulary.
Could you tell me how can I resolve this please ?