akaunting/config/charts.php

<?php

return [
    /*
    |--------------------------------------------------------------------------
    | Default library used in charts.
    |--------------------------------------------------------------------------
    |
    | This value is used as the default chart library used when creating
    | any chart in the command line. Feel free to modify it or set it up
    | while creating the chart to ignore this value.
    |
    */
    'default_library' => 'Chartjs',
];