As of 4.4.1 and continuing with 4.4.2, pages such as a ticket’s “Actions” => “Resolve” page die out with the message, “An internal RT error has occurred. Your administrator can find more details in RT’s log files”. The entire page is not displayed, as if output dies with this message.
In the server’s httpd error log, I see the text:
 [Tue Dec 5 22:57:47 2017] [error]: could not find component for path ‘/Ticket/Elements/ShowSimplifiedRecipients’
Can anyone shed any light on why this is happening? The files in question all seem to be in the right place and I don’t see any obvious cause.