You are running some tee processes that you should not need with that. Try something more like: (untested)

# no need to close STDERR or STDOUT first; reopening will do that impl
+icitly
open STDERR, '>>', $logpath.'/'.$logfile
  or die "redirect STDERR >> $logpath/$logfile: $!"; $| = 1;
open STDOUT, '>>&=', \*STDERR
  or die "redirect STDOUT -> STDERR: $!"; $| = 1;
print "\n\n", '-' x 45, "\n";
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