After updating from 7.4.0 to 7.5.1 Professional I get lots of this error in the logfile.
error [2022-11-21 09:19:47.353 +01:00] Unable to render email caller=“email/email_batching.go:344” error=“template: messages_notification.html:664:33: executing “messages_notification” at <.MessageAttachments>: can’t evaluate field MessageAttachments in type *email.postData”
It is sad that quality control of Mattermost is lacking a bit as I have to write to support each update with new errors in the log file.