Receiving "blank" emails at intervals

We have a self-hosted Appwrite installation, recently upgraded to 1.4.2.
SMTP server details have been assigned to .env, so email works fine.
At certain intervals, that seem to be a few days apart, we receiving an email message with the following properties:

• The email is from the Appwrite admin account
• The email subject is empty
• The email body only contains: {{body}};

Is there a way I can find out why these emails are being sent?

There's no information about this in the appwrite-worker-mails logs.

PS: Can you please consider adding the following tags to the Support channel? email and docs

Couldn't be a ghost in the shell 😅

to investigate the cause of these emails, you can start by reviewing the appwrite logs for any relevant information about the emails being sent and checking for any error messages or unusual activity around the times when these emails are generated.
Additionally, examine any scheduled tasks or cron jobs within appwrite that might be triggering these emails unintentionally and ensure their configurations are set up correctly

I would check the docker logs for the appwrite-worker-mails container. That container logs every mail that is sent.

Thanks, waiting for another blank mail to be sent and then check it again...