Hello,
I use Metronic with WordPress and Bootstrap5.

I a page I have two form.
For this I make a new file mycustom.js.

In this file I put the code for validation form, but in frontend Chrome see me: Cannot read properties of null (reading 'classList') in plugin.bundle.js.

Could it depend on the constant FORM which is identical on all the JS that check the validation?
-----
const form = document.getElementById('password_formvalidation');
var validator = FormValidation.formValidation(
form, {
-----

To try and fix this, I've encapsulated all the validation script in
-----
(function () {
....
})()
-----

But nothing, it doesn't work.
Suggestions?