Getting NO_SUCH_PART / "no such message" error while sending or replying on a mail from the Webclient

If you encounter a problem sending mail through zimbra webmail, the following errors may appear:

method:   [unknown]
msg:      no such message part: 2.2
code:     mail.NO_SUCH_PART
detail:   soap:Sender
trace:    qtp509886383-32204:1694158319696

method:	[unknown]
msg:	no such message: 11304
code:	mail.NO_SUCH_MSG
detail:	soap:Sender
trace:	qtp192881625-273468:1694158319696:ff2867444b518dfe

Try resolving the problem by creating a new signature. Most cases are caused by a corrupt signature or an invalid image link. Steps:

1. Go to Preference >> Signature.
2. Delete or recreate the signature, or try removing the image link.