I am working on backend using MERN i have created the route to send the verification mail but when i try to hit the apiendpoint in post it gives me error

Cannot POST /api/users/sendVerificationMail

router.use("/api/users",websiteUserRoutes)
router.get("/sendVerificationMail",auth,UserController.sendVerificationMail)


module.exports.sendVerificationMail = async (req,res)=>{
  let id = req.userId;
  let existingDocument = await User.findById(id);
  if (!existingDocument) {
    return res.send({ error: true, msg: "User not found." });
  }
  console.log(existingDocument.email)
  let random = await sendMail(existingDocument.email,"verify",id)
  console.log(random);
  res.send({id,random});
}

DATABASE Fields

DATABASE FIELD

I wanted to know why this happening also i need to send userId or mongodb Unique id in params or in query

so that this endpoint start working