Fix fatal error currently breaking the build on Travis
Fix fatal error currently breaking the build on Travis

basekit/twig.js,br0wn/twig.js,schmittjoh/twig.js,br0wn/twig.js,basekit/twig.js,schmittjoh/twig.js,basekit/twig.js,schmittjoh/twig.js,br0wn/twig.js