My two cents probably doesn't even matter because I'm using an "unsupported" flavor of Linux (Gentoo) but I thought I would mention that this issue is happening with me as well.
At first I would try starting the service (it stopped running 6 days ago, non-prod servers and I didn't get a chance to look at them until now) and it would give me the error saying it couldn't find the libidn.so.11 file or directory, so I did an emerge libidn11
This solved the problem with running the service, so it will now start, but it will only run for a very short amount of time until it stops without cause.
I am actually fairly new to using gentoo linux so I'm not sure where to look for the log for why it keeps dying.... or if Pulseway itself has a log file, I cannot locate it.
Would love any help!! Even thought it's not "supported"
Thanks!