Express 500 TypeError: Not a string or buffer at Hash.update (crypto.js:209:17) at C:\nodejstest\microblog\routes\index.js:67:26 at callbacks (C:\nodejstest\microblog\node_modules\express\lib\router\index.js:161:37) at param (C:\nodejstest\microblog\node_modules\express\lib\router\index.js:135:11) at pass (C:\nodejstest\microblog\node_modules\express\lib\router\index.js:142:5) at Router._dispatch (C:\nodejstest\microblog\node_modules\express\lib\router\index.js:170:5) at Object.router (C:\nodejstest\microblog\node_modules\express\lib\router\index.js:33:10) at next (C:\nodejstest\microblog\node_modules\express\node_modules\connect\lib\proto.js:190:15) at Object.handle (C:\nodejstest\microblog\app.js:45:9) at next (C:\nodejstest\microblog\node_modules\express\node_modules\connect\lib\proto.js:190:15)

我做的是《Nodejs开发指南》里面的微博 不知道是错了哪里，每次按登录时就会报这个错