TypeError: Cannot read property 'movie' of undefined
   at /Users/apple/Creative/tutorial/nodejs_mongodb/app.js:123:20
   at Layer.handle [as handle_request] (/Users/apple/Creative/tutorial/nodejs_mongodb/node_modules/express/lib/router/layer.js:95:5)
   at next (/Users/apple/Creative/tutorial/nodejs_mongodb/node_modules/express/lib/router/route.js:137:13)
   at Route.dispatch (/Users/apple/Creative/tutorial/nodejs_mongodb/node_modules/express/lib/router/route.js:112:3)
   at Layer.handle [as handle_request] (/Users/apple/Creative/tutorial/nodejs_mongodb/node_modules/express/lib/router/layer.js:95:5)
   at /Users/apple/Creative/tutorial/nodejs_mongodb/node_modules/express/lib/router/index.js:281:22
   at Function.process_params (/Users/apple/Creative/tutorial/nodejs_mongodb/node_modules/express/lib/router/index.js:335:12)
   at next (/Users/apple/Creative/tutorial/nodejs_mongodb/node_modules/express/lib/router/index.js:275:10)
   at serveStatic (/Users/apple/Creative/tutorial/nodejs_mongodb/node_modules/serve-static/index.js:75:16)
   at Layer.handle [as handle_request] (/Users/apple/Creative/tutorial/nodejs_mongodb/node_modules/express/lib/router/layer.js:95:5)
   at trim_prefix (/Users/apple/Creative/tutorial/nodejs_mongodb/node_modules/express/lib/router/index.js:317:13)
   at /Users/apple/Creative/tutorial/nodejs_mongodb/node_modules/express/lib/router/index.js:284:7
   at Function.process_params (/Users/apple/Creative/tutorial/nodejs_mongodb/node_modules/express/lib/router/index.js:335:12)
   at next (/Users/apple/Creative/tutorial/nodejs_mongodb/node_modules/express/lib/router/index.js:275:10)
   at expressInit (/Users/apple/Creative/tutorial/nodejs_mongodb/node_modules/express/lib/middleware/init.js:40:5)
   at Layer.handle [as handle_request] (/Users/apple/Creative/tutorial/nodejs_mongodb/node_modules/express/lib/router/layer.js:95:5)

有没有遇到过这种问题的同学？这个怎么处理？