Map psgi.errors to psgix.logger or other logger
'psgi.errors' defaults to 'STDERR' in most backends, which results in
content going somewhere unhelpful like the server console.
This middleware simply remaps the 'psgi.errors' stream to the
'psgix.logger' stream, or an explicit logger that you provide.
This is especially handy when used in combination with other middlewares
such as Plack::Middleware::LogWarn (which diverts Perl warnings to
'psgi.errors'); Plack::Middleware::HTTPExceptions (which diverts uncaught
exceptions to 'psgi.errors'); and Plack::Middleware::AccessLog, which
defaults to 'psgi.errors' when not passed a logger -- which is also
automatically applied via plackup (so if you provided no '--access-log'
option indicating a filename, 'psgi.errors' is used).
There is no official package available for openSUSE Leap 15.4