koa忽略等待并返回404 Not found

Question

所以当我尝试类似

route.post('/signup',async (ctx)=>{
    try{
        const hashed = await bcrypt.hash(ctx.request.body.password,10);
        let newUser = await assignUser(ctx.request.body,hashed).catch(error=>{throw Error(error)});
        console.log(newUser);
    }
    catch(error){
        console.log(error.message);
        ctx.status = 500;
        return ctx.body={success:false,message:error.message};
    }
    return ctx.body = {success:true,message:'An email has been sent to your address click link to verify your address'};  
});

当我尝试使用此代码并将请求发送到api时，它将在Postman中返回404状态未找到。我期望的输出是错误消息或

 {success:true,message:'An email has been sent to your address click link to verify your address'}

作为邮递员中的json。当我在控制台中登录newUser时，它会显示哈希密码和用户对象，并且当出现错误时，将记录错误消息，但是从请求中返回的任何内容都不会返回，只是找不到404。

这里是assignUser代码

function assignUser(body,hashed){
    return new Promise((resolve,reject)=>{
        let newUser = new User;
        newUser.name = body.name;
        newUser.lastName = body.lastName;
        newUser.email = body.email;
        newUser.age = body.age;
        newUser.username = body.username;
        newUser.password = hashed;
        resolve(newUser);
    });
}

和依赖项

 "dependencies": {
    "bcrypt": "^3.0.0",
    "jsonwebtoken": "^8.3.0",
    "koa": "^2.5.2",
    "koa-body": "^4.0.4",
    "koa-router": "^7.4.0",
    "mongoose": "^5.2.12"
  }