这个命令在铁路由器中是否仍然存在?为什么我收到此错误?
TypeError: Object function router(req, res, next) { // 13
//XXX this assumes no other routers on the parent stack which we should probably fix // 14
router.dispatch(req.url, { // 15
request: req, // 16
response: res // 17
}, next); // 18
} has no method 'go'
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