Cannot read property 'sigBytes' of undefined

Cannot read property 'sigBytes' of undefined

TypeError: Cannot read property 'sigBytes' of undefined at Object.init (/Volumes/T3/node_web/myapp/node_modules/crypto-js/hmac.js:53:21) at /Volumes/T3/node_web/myapp/node_modules/crypto-js/core.js:744:25 at /Volumes/T3/node_web/myapp/routes/index.js:38:16 at Layer.handle [as handle_request] (/Volumes/T3/node_web/myapp/node_modules/express/lib/router/layer.js:95:5) at next (/Volumes/T3/node_web/myapp/node_modules/express/lib/router/route.js:131:13) at Route.dispatch (/Volumes/T3/node_web/myapp/node_modules/express/lib/router/route.js:112:3) at Layer.handle [as handle_request] (/Volumes/T3/node_web/myapp/node_modules/express/lib/router/layer.js:95:5) at /Volumes/T3/node_web/myapp/node_modules/express/lib/router/index.js:277:22 at Function.process_params (/Volumes/T3/node_web/myapp/node_modules/express/lib/router/index.js:330:12) at next (/Volumes/T3/node_web/myapp/node_modules/express/lib/router/index.js:271:10)