The app is failing with 502 constantely

It's been a while we are discussing this issue on the IRC channel, and it's getting hard to keep track of what has been tried.

I suggest to add the log and different tries here.

I found in my IRC log (20180628) different error this time [4574] core @0.005639> [hit #160]response: 404 in /usr/share/perl5/Dancer/Handler.pm l. 181 Use of uninitialized value in subroutine entry at /usr/share/perl5/HTTP/Server/Simple.pm line 422. Bad arg length for Socket::sockaddr_family, length is 0, should be at least 2 at /usr/share/perl5/HTTP/Server/Simple.pm line 422.

Today I suggested Chris to set STARMAN_DEBUG (if using starman).