18   die "MoreData requires an open tag: $!" unless ($opentag);
     30   die "No format specified in args or configuration: $!" unless $format;
     33   unless (scalar($substrings_aref)) { # no stringrefs returned
     34     die "cannot extract substrings from string: $!";
     35   }
     42   length($datasep_cfg) or die "The data separation string must be configured: $!";
     44   length($hashsep_cfg) or die "The hash separation string must be configured: $!";
     52   } else {
     53     die "no format : $!";
     54   }