Error field type slides

when I use type “slides” error:
This is code:
array(
‘id’ => ‘opt-slides’,
‘type’ => ‘slides’,
‘title’ => __(‘Slides Options’, ‘redux-framework-demo’),
‘subtitle’ => __(‘Unlimited slides with drag and drop sortings.’, ‘redux-framework-demo’),
‘desc’ => __(‘This field will store all slides values into a multidimensional array to use into a foreach loop.’, ‘redux-framework-demo’),
‘placeholder’ => array(
‘title’ => __(‘This is a title’, ‘redux-framework-demo’),
‘description’ => __(‘Description Here’, ‘redux-framework-demo’),
‘url’ => __(‘Give us a link!’, ‘redux-framework-demo’),
),
),

This is report error:
Fatal error: Cannot use string offset as an array in ..\..\..\..\..\wordpress\wp-content\themes\..\framework\redux\reduxframework\ReduxCore\framework.php on line 2292

Please you help me.
Thanks

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