These tips helped a lot for me. I had a wrong line in the yaa.conf as well and I could find it with Errvee’s comment.
(The problem was: I used an @(at) sign in my sql password so I had to use another kind of apostrophe.)

Thanks and cheers,
Peter

I added print command to yaa.pl find out error:

sub parse_config_file {
my ($file) = @_;
unless (my $result = do $file) {
if ($@) {
$error = “Syntax error in file ” . $file . “: ” . $@;
}
elsif (! defined $result) {
$error = “Couldn’t open file ” . $file . “: ” . $!;
}
elsif (! $result) {
$error = “Couldn’t run config file ” . $file;
}
# return error
# —— this — line — added ————————————-
print STDERR “parse_config_file return 0 error=$error\n”;
# —— this — line — added ————————————-
return 0;
}
return 1;
}