====== Issues ======

''OpenProject 15.5.0''

<code>
Http failure response for http://example.com/api/v3/capabilities?pageSize=-1&filters=%5B%7B%22principal%22%3A%7B%22operator%22%3A%22%3D%22%2C%22values%22%3A%5B%224%22%5D%7D%7D%2C%7B%22context%22%3A%7B%22operator%22%3A%22%3D%22%2C%22values%22%3A%5B%22g%22%5D%7D%7D%2C%7B%22action%22%3A%7B%22operator%22%3A%22%3D%22%2C%22values%22%3A%5B%22projects%2Fcreate%22%5D%7D%7D%5D: 503 Service Unavailable
</code>

===== :arguments expected to be an Array of individual string args =====


After upgrade to 17, email notification stop working. Trying to send test email:
<code>
An error occurred while sending mail (:arguments expected to be an Array of individual string args)
</code>

Source of issue: [[https://github.com/mikel/mail/issues/1538|Sendmail argument change breaks Rails usage of Sendmail #1538]]

Solution:
<code bash>
openproject config:set OPENPROJECT_SENDMAIL__ARGUMENTS="[-i]"
openproject configure
</code>

More info:
  * [[https://github.com/opf/openproject/blob/dev/docs/installation-and-operations/configuration/outbound-emails/README.md#sendmail-options]]
  * [[https://github.com/opf/openproject/pull/21295/changes]]
  *