Issue submitting form data from boostrap 4 modal - laravel

Question

I cannot get data to submit from a modal in laravel. When I use the below code and hit the 'add user' button, the modal just closes and doesn't seem to call the #store method in my controller. Data doesn't get submitted to the db
<div class="modal fade" id="addNew" tabindex="-1" role="dialog">
<div class="modal-dialog" role="document">
<div class="modal-content">
<div class="modal-header">
<h5 class="modal-title">New User</h5>
<button type="button" class="close" data-dismiss="modal" aria-label="Close">
<span aria-hidden="true">×</span>
</button>
</div>
<div class="modal-body">
{!! Form::open(['method' =>'POST', 'action'=> 'UsersController#store', 'files'=>true, 'enctype'=>'multipart/form-data']) !!}
<div class="form-group {{$errors->has('firstName') ? 'has-error' : ''}}">
{!! Form::label('firstName', 'First Name:') !!}
{!! Form::text('firstName', null, ['class'=>'form-control', 'rows' => 3])!!}
#if($errors->has('firstName'))
{{$errors->first('firstName')}}
#endif
</div>
{{--most form data removed for simplicity--}}
<div class="form-group">
{!! Form::submit('Add user', ['class'=>'btn btn-primary']) !!}
</div>
{!! Form::close() !!}
</div>
</div>
</div>
</div>

Answer 1

csrf token is missing in your form, which will not allow to submit data in controller.
Add " #csrf " in form and try again.

Answer 2

It happens when your submit button scope is out of the form/div scope or if there is any other button used before submit button.
As you haven't pasted other code for simplicity there must be a button before or issue with HTML tags. Please check all Div tags formatting(opening & closing) or add HTML code here from source code for more help.
Thank you,
Happy Coding.