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Issues

OpenProject 15.5.0 

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

:arguments expected to be an Array of individual string args

After upgrade to 17, email notification stop working. Trying to send test email: 

An error occurred while sending mail (:arguments expected to be an Array of individual string args)

Source of issue: https://github.com/mikel/mail/issues/1538

Solution: 

openproject config:set OPENPROJECT_SENDMAIL__ARGUMENTS="[-i]"
openproject configure