Unable to send attachment, but there is no email? Since I have updated my Nexus4 to Lollipop this error appears in the notification bar : "Unable to send attachment : object". If I tap this error it links me to the sending email and display that there are no e-mail to send.

I searched in my Google mail box but I have no email with this object and I have no elements in the phone with this object.

How can I block this notification?
The problem seems disappered after a clean update of Android OS. Maybe the last updateby OTA was not done in the right way and take that error