Uncaught Error: array_key_exists(): Argument #2 ($array) must be of type array, string given
in /var/www/swelltek/live/wp-content/themes/swelltek_alpha/functions.php on line 461

Call stack:

1. swelltek_div_wrap_attachment_image()
   wp-includes/class-wp-hook.php:324
2. WP_Hook::apply_filters()
   wp-includes/plugin.php:205
3. apply_filters()
   wp-includes/media.php:1195
4. wp_get_attachment_image()
   wp-content/themes/swelltek_alpha/inc/class-swelltek-content-variable.php:76
5. Swelltek_Content_Variable::get_product_images()
   wp-content/themes/swelltek_alpha/inc/class-swelltek-content-variable.php:61
6. Swelltek_Content_Variable::get_image_gallery()
   wp-includes/class-wp-hook.php:324
7. WP_Hook::apply_filters()
   wp-includes/class-wp-hook.php:348
8. WP_Hook::do_action()
   wp-includes/plugin.php:517
9. do_action()
   wp-content/themes/swelltek_alpha/woocommerce/content-single-product.php:60
10. require('/var/www/swelltek/li...t-single-product.php')
    wp-includes/template.php:812
11. load_template()
    wp-content/plugins/woocommerce/includes/wc-core-functions.php:285
12. wc_get_template_part()
    wp-content/plugins/woocommerce/includes/wc-template-functions.php:1002
13. woocommerce_content()
    wp-content/themes/swelltek_alpha/woocommerce.php:9
14. include('/var/www/swelltek/li...lpha/woocommerce.php')
    wp-includes/template-loader.php:106
15. require_once('/var/www/swelltek/li.../template-loader.php')
    wp-blog-header.php:19
16. require('/var/www/swelltek/live/wp-blog-header.php')
    index.php:17