Error trying to read file using the examples in the doc about stackprof HOT 8 CLOSED

o.on('--limit=[num]', ... )

o.on('--method=[grep]', ... )

o.on('--file=[grep]', ... )

  o.on('--text', 'Text summary per method (default)'){ options[:format] = :text }
  o.on('--files', 'List of files'){ |f| options[:format] = :files }
  o.on('--limit [=num]', Integer, 'Limit --text or --files output to N lines'){ |n| options[:limit] = n }
  o.on('--sort-total', "Sort --text or --files output on total samples\n\n"){ options[:sort] = true }
  o.on('--method [=grep]', 'Zoom into specified method'){ |f| options[:format] = :method; options[:filter] = f }
  o.on('--file [=grep]', 'Show annotated code for specified file'){ |f| options[:format] = :file; options[:filter] = f }
  o.on('--callgrind', 'Callgrind output (use with kcachegrind, gprof2dot)'){ options[:format] = :callgrind }
  o.on('--graphviz', "Graphviz output (use with dot)\n\n"){ options[:format] = :graphviz }
  o.on('--debug', 'Pretty print raw profile data'){ options[:format] = :debug }