TypeError: login is not a function at HTMLInputElement.onclick (VM188 index.html:76) onclick @ VM188 index.html:76

I am trying to make a login page for my project I am working on and I came across this error while trying to run the code. I have no idea what is causing it.

Here is my code:

function login() {
      var userEmail = document.getElementById("email").value;
      var userPass = document.getElementById("password").value;
      
      window.alert(userEmail + " " + userPass);
}

<input name="login" id="login" class="btn btn-block login-btn mb-4" type="button" value="Login" onclick="login()">

Do you know what’s happening?

Thanks