Mailgate-bouncy

I got the following error in the postfix-log with the attached mail.
What’s the problem?

/Jonas

Jun 17 13:41:15 rasputin postfix/local[24452]: 46302A37CF:
to=helpdesk-student@rt3.unit.liu.se, relay=local, delay=0,
status=bounced (Command died with status 11:
"/service/rt3/bin/rt-mailgate --queue ‘Support Kundcenter - Student’
–action correspond --url https://rt3.unit.liu.se/". Command output: RT
server error. The RT server which handled your email did not behave as
expected. It said:

System
error

error:  The 'message' parameter to Log::Dispatch::Output::log was an 'undef', which is not one of the allowed types: scalar
Params::Validate::__ANON__('The \'message\' parameter to Log::Dispatch::Output::log was a...') calle

mail.eml (2.35 KB)