Django templates: HTML validation errors - html

Question

I'm running my code through validator and it's coming back with four errors which I don't know how to fix as the code has been imported from django forms.
Does anyone know how to fix these?
<div class="form-group">
<form method="POST">
<input type="hidden" name="csrfmiddlewaretoken" value="...">
<p><label for="id_username">Username:</label> <input type="text" name="username" maxlength="150" autofocus class="form-control" required id="id_username"> <span class="helptext">Required. 150 characters or
fewer. Letters, digits and #/./+/-/_ only.</span></p>
<p><label for="id_first_name">First name:</label> <input type="text" name="first_name" class="form-control" maxlength="100" required id="id_first_name"></p>
<p><label for="id_last_name">Last name:</label> <input type="text" name="last_name" class="form-control" maxlength="100" required id="id_last_name"></p>
<p><label for="id_email">Email:</label> <input type="email" name="email" required id="id_email"></p>
<p><label for="id_password1">Password:</label> <input type="password" name="password1" autocomplete="new-password" class="form-control" required id="id_password1"> <span class="helptext">
<ul>
<li>Your password can’t be too similar to your other personal information.</li>
<li>Your password must contain at least 8 characters.</li>
<li>Your password can’t be a commonly used password.</li>
<li>Your password can’t be entirely numeric.</li>
</ul>
</span></p>
<p><label for="id_password2">Password confirmation:</label> <input type="password" name="password2" autocomplete="new-password" class="form-control" required id="id_password2"> <span class="helptext">Enter the same password as before, for verification.</span></p>
<div class="d-grid">
<button class="btn btn-dark ">Register</button>
</div>
</form>
</div>
I have used:
from django import forms
and in my views.py file I used:
from .forms import SignUpForm
my register.html page is as following:
{% extends 'base.html' %}
{% block title %}Register{% endblock %}
{% block content %}
<h1 class="my-4">Register</h1>
<div class="form-group">
<form method="POST">
{% csrf_token %}
{{ form.as_p }}
<div class="d-grid">
<button class="btn btn-dark ">Register</button>
</div>
</form>
</div>
{% endblock %}