Our users keep getting the error message -
Argument "action.email" is not supported by the handler. message.
The following speaks about it - User getting "Argument "action.email" is not supported by this handler" when creating alert
However, restarting of the SH cluster fixes the issue for a short while and then it reappears.
In this thread here, it appears that the same problem was the result of the use of quotes around the search terms and once it was removed the issue was resolved. Oddly worded error if that winds up being the case?