Error using email template w/ "origin" field

Hello,

I've setup an email template on Invoices with several fields, including "Origin" of the invoice : ${Origin}.
When trying to send an email using this template, ProjeQtOr throw an error :
 

Log file :

2021-09-21 15:21:17.781 ***** ERROR ***** [V9.2.3] on file '/opt/projeqtor/model/persistence/SqlElement.php' at line (6933)
2021-09-21 15:21:17.781 ***** ERROR ***** [V9.2.3] cause = Object of class Origin could not be converted to string
2021-09-21 15:21:17.781 ***** ERROR ***** [V9.2.3] => #0 /opt/projeqtor/model/persistence/SqlElement.php (6933) -> preg_replace_callback()
2021-09-21 15:21:17.781 ***** ERROR ***** [V9.2.3] => #1 /opt/projeqtor/model/persistence/SqlElement.php (5851) -> getMailDetailFromTemplate()
2021-09-21 15:21:17.781 ***** ERROR ***** [V9.2.3] => #2 /opt/projeqtor/tool/sendMail.php (247) -> sendMailIfMailable()

When removing the ${Origin} field, everything works fine.