Kartik export menu showing incompatible error message

I’m using kartik export menu and it’s showing the error below.

PHP Strict Warning – yiibaseErrorException

kartikgridGridView and kartikbaseBootstrapTrait define the same property ($bsVersion) in the composition of kartikgridGridView. This might be incompatible, to improve maintainability consider using accessor methods in traits instead. Class was composed

Code:

use kartikgridGridView;
use kartikexportExportMenu;

<?php 
    $gridColumns = [
        ['class' => 'yiigridSerialColumn'],
        'id',
        'bi',
        'num_movel',
        'nome_cliente',
        // 'user_criacao',
        'data_criacao',

        ['class' => 'yiigridActionColumn'],
    ];
?>

<div class="export-menu">
    <?php echo ExportMenu::widget([
        'dataProvider' => $dataProvider,
        'columns' => $gridColumns
    ]); ?>
</div>
<div class="c"></div>
<?= GridView::widget([
    'dataProvider' => $dataProvider,
    'filterModel' => $searchModel,
    'columns' => $gridColumns,
]); ?>

What can be the cause of this since i’ve followed the kartik instructions for using the export menu?

Answer

I had the same issue with kartik-v: yii2-grid 3.1.9 and yii2-export 1.3.0 recent releases. To solve this issue you have two options:

1. Upgrade to PHP 7.X
2. Set in composer.json the specific release that is compatible with PHP 5.6.x or 5.7.x.

composer.json

"minimum-stability": "dev",
"prefer-stable": true,
"require": {
    "kartik-v/yii2-krajee-base": "1.9.3",
    "kartik-v/yii2-export": "1.2.9",
    "kartik-v/yii2-grid": "3.1.8",
    "kartik-v/yii2-widget-activeform": "1.5.1",
},