yii2 display error msg - php

Question

displaying msg on above the line, how to display error msg below line. I have added below view page. any suggestions.
below is view page
<div class="ibox-content bwform clearfix" id="bwcart">
<h2><b>Profile</b><div id="loader"></div></h2>
<?php $form = ActiveForm::begin(
['action' =>'',
'options' => ['method'=>'post','class'=>'form-horizontal','id'=>'profile-form','enctype'=>'multipart/form-data'],
'fieldConfig' => [
'template' => "{label}<div class=\"col-md-12\">{input}\n{error}</div>",
'labelOptions' => ['class' => 'col-lg-12 control-label p-l-0'],
],
'enableAjaxValidation'=>true,'enableClientValidation' => true,'validateOnSubmit'=>true]); ?>
<div class="box-2">
<div class="input input--hoshi <?=$prefilled ?>">
<?= $form->field($model, 'firstname')->textInput(array('placeholder' => '','class'=>'input__field input__field--hoshi'))->label(false); ?>
<label class="input__label input__label--hoshi input__label--hoshi-color-3" for="first_name">
<span class="input__label-content input__label-content--hoshi">First Name</span>
</label>
</div>
</div>
<div class="box-2">
<div class="input input--hoshi <?=$prefilled ?>">
<?= $form->field($model, 'lastname')->textInput(array('placeholder' => '','class'=>'input__field input__field--hoshi'))->label(false); ?>
<label class="input__label input__label--hoshi input__label--hoshi-color-3" for="first_name">
<span class="input__label-content input__label-content--hoshi">Last Name</span>
</label>
</div>
</div>

Answer 1

You can use this solution:
<?php $form = ActiveForm::begin(
['action' =>'',
'options' => ['method'=>'post','class'=>'form-horizontal','id'=>'profile-form','enctype'=>'multipart/form-data'],
'fieldConfig' => [
//modify this
'template' => "{label}<div class='col-md-12'>{input}</div><div class='col-md-12 '>{error}</div>",
'labelOptions' => ['class' => 'col-lg-12 control-label p-l-0'],
],
'enableAjaxValidation'=>true,'enableClientValidation' => true,'validateOnSubmit'=>true]); ?>
So your error tag is positioned
under your input tag.

Answer 2

Your error attribute should not be in your col-md-12 class div.
So it should be like this:
<?php $form = ActiveForm::begin(
['action' =>'',
'options' => ['method'=>'post','class'=>'form-horizontal','id'=>'profile-form','enctype'=>'multipart/form-data'],
'fieldConfig' => [
'template' => "{label}<div class=\"col-md-12\">{input}</div>{error}",
'labelOptions' => ['class' => 'col-lg-12 control-label p-l-0'],
],
'enableAjaxValidation'=>true,'enableClientValidation' => true,'validateOnSubmit'=>true]); ?>