Columns and Tabs issue

Sorry the code provided above is the one I used without columns, below is the code which is not working correctly. The console in Chrome Dev Tools is empty, it shows blank page.

<?php

/**
 * Creating Metaboxes for posts.
 * @return [array]             [Metabox Parameters]
 */

function talent_metaboxes( $meta_boxes )
{
    $prefix = 'talent_';

    // Post Quiz Metaboxes
    $meta_boxes[] = array(
        'title'    => 'Talent Details',
        'id'       => 'talent_attributes',
        'pages'    => array( 'talent' ),
        'context'  => 'normal',
        'priority' => 'high',
        'tabs'     => array(
            'about' => array(
                'label' => __( 'About', 'rwmb' ),
                'icon'  => 'dashicons-admin-users', // Dashicon
            ),
            'resume'  => array(
                'label' => __( 'Resume', 'rwmb' ),
                'icon'  => 'dashicons-welcome-learn-more', // Dashicon
            ),
            'work'  => array(
                'label' => __( 'Work', 'rwmb' ),
                'icon'  => 'dashicons-admin-page', // Dashicon
            ),
            'photos'  => array(
                'label' => __( 'Photos', 'rwmb' ),
                'icon'  => 'dashicons-format-gallery', // Dashicon
            ),
            'ie-resume'  => array(
                'label' => __( 'Import/Export Resume', 'rwmb' ),
                'icon'  => 'dashicons-media-default', // Dashicon
            ),
        ),
        
        // Tab style: 'default', 'box' or 'left'. Optional
        'tab_style' => 'box',
        'fields' => array( 

            /* ABOUT TAB */
            array(
                'name'  => 'First Name',
                'desc'  => '',
                'id'    => $prefix . 'first_name',
                'type'  => 'text',
                'class' => 'talent-details talent_first_name',
                'clone' => false,
                'columns' => 3,
                'tab'  => 'about'
            ),
            
            array(
                'name'  => 'Last Name',
                'desc'  => '',
                'id'    => $prefix . 'last_name',
                'type'  => 'text',
                'class' => 'talent-details talent_last_name',
                'clone' => false,
                'columns' => 3,
                'tab'  => 'about'
            ),

            array(
                'name'  => 'Active',
                'desc'  => '',
                'id'    => $prefix . 'active',
                'type'  => 'checkbox',
                'class' => 'talent-details talent_active',
                'clone' => false,
                'columns' => 2,
                'tab'  => 'about'
            ),

            array(
                'name'  => 'Featured',
                'desc'  => '',
                'id'    => $prefix . 'featured',
                'type'  => 'checkbox',
                'class' => 'talent-details talent_featured',
                'clone' => false,
                'columns' => 2,
                'tab'  => 'about'
            ),

            array(
                'name'  => 'Hide Age',
                'desc'  => '',
                'id'    => $prefix . 'hide_age',
                'type'  => 'checkbox',
                'class' => 'talent-details talent_hide_age',
                'clone' => false,
                'columns' => 2,
                'tab'  => 'about'
            ),            
            
            array(
                'name'  => 'Description',
                'desc'  => '',
                'id'    => $prefix . 'description',
                'type'  => 'wysiwyg',
                'class' => 'talent-details talent_description',
                'clone' => false,
                'columns' => 12,
                'tab'  => 'about'
            ),

            array(
                'name'  => 'Gender',
                'desc'  => '',
                'id'    => $prefix . 'gender',
                'type'    => 'select',
                'options' => array(
                    'male' => 'Male',
                    'female' => 'Female',
                ),
                'placeholder' => 'Select',
                'class' => 'talent-details talent_gender',
                'clone' => false,
                'columns' => 4,
                'tab'  => 'about'
            ),

            array(
                'name'  => 'Ethnicity',
                'desc'  => '',
                'id'    => $prefix . 'ethnicity',
                'type'    => 'select',
                'options' => array(
                    'African American' => 'African American',
                    'Asian' => 'Asian',
                    'Caucasian' => 'Caucasian',
                    'Latino' => 'Latino',
                    'Other' => 'Other',
                ),
                'placeholder' => 'Select',
                'class' => 'talent-details talent_ethnicity',
                'clone' => false,
                'columns' => 4,
                'tab'  => 'about'
            ),

            array(
                'name'  => 'Secondary Ethnicity',
                'desc'  => '',
                'id'    => $prefix . 'secondary_ethnicity',
                'type'    => 'select',
                'options' => array(
                    'African American' => 'African American',
                    'Asian' => 'Asian',
                    'Caucasian' => 'Caucasian',
                    'Latino' => 'Latino',
                    'Other' => 'Other',
                ),
                'placeholder' => 'Select',
                'class' => 'talent-details talent_secondary_ethnicity',
                'clone' => false,
                'columns' => 4,
                'tab'  => 'about'
            ),

            array(
                'name'  => 'Tertiary Ethnicity',
                'desc'  => '',
                'id'    => $prefix . 'tertiary_ethnicity',
                'type'    => 'select',
                'options' => array(
                    'African American' => 'African American',
                    'Asian' => 'Asian',
                    'Caucasian' => 'Caucasian',
                    'Latino' => 'Latino',
                    'Other' => 'Other',
                ),
                'placeholder' => 'Select',
                'class' => 'talent-details talent_tertiary_ethnicity',
                'clone' => false,
                'columns' => 4,
                'tab'  => 'about'
            ),

            array(
                'name'  => 'Hair Color',
                'desc'  => '',
                'id'    => $prefix . 'hair_color',
                'type'    => 'select',
                'options' => array(
                    'Black' => 'Black',
                    'Blonde' => 'Blonde',
                    'Brown' => 'Brown',
                    'Grey' => 'Grey',
                    'Red' => 'Red',
                    'Salt & Pepper' => 'Salt & Pepper',
                    'White' => 'White',
                ),
                'placeholder' => 'Select',
                'class' => 'talent-details talent_hair_color',
                'clone' => false,
                'columns' => 4,
                'tab'  => 'about'
            ),

            array(
                'name'  => 'Eye color',
                'desc'  => '',
                'id'    => $prefix . 'eye_color',
                'type'    => 'select',
                'options' => array(
                    'Black' => 'Black',
                    'Blue' => 'Blue',
                    'Brown' => 'Brown',
                    'Green' => 'Green',
                    'Grey' => 'Grey',
                    'Hazel' => 'Hazel',
                ),
                'placeholder' => 'Select',
                'class' => 'talent-details talent_eye_color',
                'clone' => false,
                'columns' => 4,
                'tab'  => 'about'
            ),

            array(
                'name'  => 'DOB',
                'desc'  => '',
                'id'    => $prefix . 'dob',
                'type'    => 'date',
                'class' => 'talent-details talent_dob',
                'clone' => false,
                'columns' => 4,
                'tab'  => 'about'
            ),

            array(
                'name'  => 'Additional Range',
                'desc'  => '',
                'id'    => $prefix . 'additional_range',
                'type'    => 'select',
                'options' => array(
                    'Can play younger' => 'Can play younger',
                    'Can play older' => 'Can play older',
                ),
                'placeholder' => 'Select',
                'class' => 'talent-details talent_additional_range',
                'clone' => false,
                'columns' => 4,
                'tab'  => 'about'
            ),

            array(
                'name'  => 'Height',
                'desc'  => '',
                'id'    => $prefix . 'height',
                'type'    => 'text',
                'class' => 'talent-details talent_height',
                'clone' => false,
                'columns' => 4,
                'tab'  => 'about'
            ),

            array(
                'name'  => 'Weight (lbs)',
                'desc'  => '',
                'id'    => $prefix . 'weight',
                'type'    => 'text',
                'class' => 'talent-details talent_weight',
                'clone' => false,
                'columns' => 4,
                'tab'  => 'about'
            ),

            array(
                'name'  => 'Website',
                'desc'  => '',
                'id'    => $prefix . 'website',
                'type'    => 'url',
                'class' => 'talent-details talent_website',
                'clone' => false,
                'columns' => 4,
                'tab'  => 'about'
            ),

            /* RESUME TAB */ 
            array(
                'name'  => 'Header',
                'desc'  => '',
                'id'    => $prefix . 'resume_header',
                'type'  => 'text',
                'class' => '',
                'clone' => true,
                'sort_clone' => true,
                'columns' => 12,
                'tab'  => 'resume'
            ),

            array(
                'name'  => '',
                'desc'  => '',
                'id'    => $prefix . 'resume_data',
                'type'  => 'text',
                'class' => '',
                'clone' => true,
                'sort_clone' => true,
                'columns' => 4,
                'tab'  => 'resume'
            ),

            array(
                'name'  => '',
                'desc'  => '',
                'id'    => $prefix . 'resume_data',
                'type'  => 'text',
                'class' => '',
                'clone' => true,
                'sort_clone' => true,
                'columns' => 4,
                'tab'  => 'resume'
            ),

            array(
                'name'  => '',
                'desc'  => '',
                'id'    => $prefix . 'resume_data',
                'type'  => 'text',
                'class' => '',
                'clone' => true,
                'sort_clone' => true,
                'columns' => 4,
                'tab'  => 'resume'
            ),

            /* WORK TAB */ 
            array(
                'name'  => 'Voice Over',
                'desc'  => '',
                'id'    => $prefix . 'work_voiceover',
                'type'  => 'file',
                'class' => 'talent-details talent_work_voiceover',
                'clone' => false,
                'tab'  => 'work'
            ),

            array(
                'name'  => 'Theatrical Reel',
                'desc'  => '',
                'id'    => $prefix . 'work_theatrical_reel',
                'type'  => 'url',
                'class' => 'talent-details talent_work_theatrical_reel',
                'clone' => false,
                'sort_clone' => false,
                'tab'  => 'work'
            ),

            array(
                'name'  => 'Commercial Reel',
                'desc'  => '',
                'id'    => $prefix . 'work_commercial_reel',
                'type'  => 'url',
                'class' => 'talent-details talent_work_commercial_reel',
                'clone' => false,
                'sort_clone' => false,
                'tab'  => 'work'
            ),

            array(
                'name'  => 'Hosting Reel',
                'desc'  => '',
                'id'    => $prefix . 'work_hosting_reel',
                'type'  => 'url',
                'class' => 'talent-details talent_work_commercial_reel',
                'clone' => false,
                'sort_clone' => false,
                'tab'  => 'work'
            ),

            /* PHOTOS TAB */ 
            array(
                'name'  => 'Photos',
                'desc'  => '',
                'id'    => $prefix . 'work_voiceover',
                'type'  => 'image_advanced',
                'class' => 'talent-details talent_work_voiceover',
                'clone' => false,
                'tab'  => 'photos'
            ),
        ) 
    );

    return $meta_boxes;
}
add_filter( 'rwmb_meta_boxes', 'talent_metaboxes' );

Hello Anh,

This worked well, just some CSS issues (http://take.ms/E1oSr). I also had one more question which I asked on WordPress.org support forums for your plugin, please see if you can answer this for me (https://wordpress.org/support/topic/multiple-options-in-one-field?replies=1) ..

Thanks,
Zain