Using the inspect code I saw this error."validator.min.js:9 Uncaught ReferenceError: jQuery is not defined at"
Well, from what I understand I have to call jquery.js first of all. But it's embedded in the html_header.html, which is always called to mount the screen.
html_header.html
<!doctype html>
<html lang="pt-br">
<head>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, initial-scale=1, shrink-to-fit=no">
<meta name="description" content="">
<meta name="author" content="">
<link rel="icon" href="../../../../favicon.ico">
<title>Sistema Escolar Integrado - SEI.</title>
<!-- Principal CSS do Bootstrap
<link href="<?php echo base_url();?>dist/css/bootstrap.min.css" rel="stylesheet">-->
<!-- Estilos customizados para esse template -->
<link href="<?php echo base_url();?>assets/css/dashboard.css" rel="stylesheet">
<script type="text/javascript" src="<?php echo base_url();?>assets/js/jquery.min.js"></script>
<script type="text/javascript" src="<?php echo base_url();?>assets/js/bootstrap.min.js"></script>
<script type="text/javascript" src="<?php echo base_url();?>assets/js/popper.min.js"></script>
<script type="text/javascript" src="<?php echo base_url();?>assets/js/bootstrap-modal.js"></script>
<link rel="stylesheet" href="http://maxcdn.bootstrapcdn.com/bootstrap/3.3.6/css/bootstrap.min.css">
<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.12.4/jquery.min.js"></script>
<script src="http://maxcdn.bootstrapcdn.com/bootstrap/3.3.6/js/bootstrap.min.js"></script>
</head>
<body>
