/usr/lib/node_modules/opal-node/lib/../opal/opal.js:2386
      throw exception;
            ^
SyntaxError: unexpected '"tNL"'
    at OpalClass.def.$backtrace.self [as $new] (/usr/lib/node_modules/opal-node/lib/../opal/opal.js:2731:17)
    at $Parser.def.$raise (/usr/lib/node_modules/opal-node/lib/../opal/opal.js:2383:31)
    at $Parser.def.$_racc_do_parse_rb (/usr/lib/node_modules/opal-node/lib/../opal/opal-parser.js:1738:16)
    at $Parser.def.$do_parse (/usr/lib/node_modules/opal-node/lib/../opal/opal-parser.js:1632:21)
    at $Parser.def.$parse_to_sexp (/usr/lib/node_modules/opal-node/lib/../opal/opal-parser.js:4322:23)
    at $Parser.def.$parse (/usr/lib/node_modules/opal-node/lib/../opal/opal-parser.js:4315:21)
    at $Compiler.def.$compile (/usr/lib/node_modules/opal-node/lib/../opal/opal-parser.js:9871:56)
    at Function.OpalNode.compile (/usr/lib/node_modules/opal-node/lib/opal-node.js:62:25)
    at Function.OpalNode.run (/usr/lib/node_modules/opal-node/lib/opal-node.js:38:21)
    at Function.OpalNode.require (/usr/lib/node_modules/opal-node/lib/opal-node.js:125:18)