I want to update form with clone values in yii2 - php

Question

In update from, I am using values of two models with clone fields, in models variable, there are values but from not showing.
this error is showing
PHP Fatal Error – yii\base\ErrorException
Call to a member function isAttributeRequired() on array
my form code:
<?php
use yii\helpers\Html;
use yii\widgets\ActiveForm;
use yii\helpers\ArrayHelper;
use frontend\models\PartyM;
use frontend\models\ProductM;
use frontend\models\Category;
/**
To add date picker and multiselection from dropdown list
Date: 03 April 2017
*/
use kartik\date\DatePicker;
use yii\helpers\Url;
/* #var $this yii\web\View */
/* #var $model frontend\models\SaleorderM */
/* #var $form yii\widgets\ActiveForm */
?>
<div class="saleorder-m-form">
<?php $form = ActiveForm::begin(); ?>
<?= $form->field($modelm, 'ac_code')->dropDownList(ArrayHelper::map(PartyM::find()->where('type= :type', ['type' => 'S'])->all(),'ac_code','firmname'),['prompt'=>'Select Firmname'])->label("Firm Name");?>
<div id='main-product-section form-field' class='clonediv'>
<div class="product-section1 test1" id='1'>
<div class="product-area">
<?= $form->field($modeld, 'categoryid[]')->dropDownList(ArrayHelper::map(Category::find()->all(), 'categoryid', 'categoryname'),['prompt'=>'Select....'],['class' => 'your_class', 'id' => 'brandid1'])->label("Brand") ?>
</div>
<div class="code-area">
<?php
echo $form->field($modeld, 'productcode[]')->dropDownList(['prompt'=>'Select....'],['id'=>'brandid1-productcode'])->label("Product Code")?>
</div>
<div class="qty-area ">
<?= $form->field($modeld, 'qty[]')->textInput()->label("Quantity"); ?>
</div>
<div class="btn-area del">
</span>
</div>
</div>
</div>
<div class="form-group">
<div class="btn-area add">
<a href='javascript:void(0)' class='add_more' id='add_more' >Add More</a>
</div>
</div>
<?= $form->field($modeld, 'ordertype')->textInput()->label("Order Type"); ?>
<?php
// To add date picker
echo $form->field($modelm, 'orderdate')->widget(DatePicker::classname(), [
'name' => 'Saleorder Date',
'type' => DatePicker::TYPE_COMPONENT_APPEND,
'value' => date('Y-m-d'),
'pluginOptions' => [
'autoclose'=>true,
'format' => 'yyyy-mm-dd'
]
])->label("Saleorder Date"); ?>
<?= $form->field($modelm, 'courier')->textInput(['maxlength' => true])->label("Courier"); ?>
<?= $form->field($modelm, 'couriermode')->textInput(['maxlength' => true])->label("Courier Mode"); ?>
<?= $form->field($modelm, 'ordersource')->textInput(['maxlength' => true])->label("Order Source"); ?>
<?= $form->field($modelm, 'remarks')->textarea(array('rows'=>2,'cols'=>5)) ?>
<div class="form-group">
<?= Html::submitButton($modelm->isNewRecord ? 'Create' : 'Update', ['class' => $modelm->isNewRecord ? 'btn btn-success' : 'btn btn-primary']) ?>
</div>
<?php ActiveForm::end(); ?>
</div>