Good morning I have an array manually and I want to export it to excel can you help me please because I get the following error: "array_keys() expects parameter 1 to be array, null given"

These are the data for the view: $cliente=array ( 'RUC' => '0106657950', 'CLIENTE' => 'MONTALVAN MONTALVAN EDGAR VINICIO', '2019/03/17 - 2019/04/16' => '$326.02', '2019/04/17 - 2019/05/17' => '$0.00', '2019/05/18 - 2019/06/17' => '$0.00', '2019/06/18 - 2019/07/18' => '$0.00', '2019/07/19 - 2019/08/18' => '$0.00', '2019/08/19 - En adelante' => '$0.00', 'TOTAL' => '$326.02', ) $this->dataStore('cliente')->data($cliente);

In the view: ` \koolreport\excel\Table::create(array(

            "dataStores" => $this->dataStore("cliente")->data()
        ));