'Today' button not working on date picker

Question

Laravel 5.3 PHP 7 Ubuntu 16.04 with LAMP

I'm using backpack-demo to play around and I noticed the button 'Today' on date picker doesn't work. Code below:

$this->crud->addField([    // Date
                        'name' => 'doWhen',
                        'label' => 'Date',
                        'type' => 'date_picker',
                        'date_picker_options' => [
                            'todayBtn' => true,
                            'format' => 'm-d-Y',
                            'language' => 'en'
                    ],
                    ]);

该提问来源于开源项目：Laravel-Backpack/CRUD

Answer 1

Anyway I can debug this?