Uncaught Error: reset(): Argument #1 ($array) must be of type array, string given
in /var/www/swelltek/live/wp-content/themes/swelltek_alpha/inc/class-swelltek-content-variable.php on line 100

Call stack:

1. reset()
   wp-content/themes/swelltek_alpha/inc/class-swelltek-content-variable.php:100
2. Swelltek_Content_Variable::get_variant_options()
   wp-content/themes/swelltek_alpha/inc/class-swelltek-content-swelltek_kit.php:216
3. Swelltek_Content_Swelltek_Kit::case_variants()
   wp-includes/class-wp-hook.php:324
4. WP_Hook::apply_filters()
   wp-includes/class-wp-hook.php:348
5. WP_Hook::do_action()
   wp-includes/plugin.php:517
6. do_action()
   wp-content/themes/swelltek_alpha/inc/class-swelltek-content-base.php:210
7. Swelltek_Content_Base::get_product_brief()
   wp-includes/class-wp-hook.php:324
8. WP_Hook::apply_filters()
   wp-includes/class-wp-hook.php:348
9. WP_Hook::do_action()
   wp-includes/plugin.php:517
10. do_action()
    wp-content/themes/swelltek_alpha/woocommerce/content-single-product.php:60
11. require('/var/www/swelltek/li...t-single-product.php')
    wp-includes/template.php:812
12. load_template()
    wp-content/plugins/woocommerce/includes/wc-core-functions.php:285
13. wc_get_template_part()
    wp-content/plugins/woocommerce/includes/wc-template-functions.php:1002
14. woocommerce_content()
    wp-content/themes/swelltek_alpha/woocommerce.php:9
15. include('/var/www/swelltek/li...lpha/woocommerce.php')
    wp-includes/template-loader.php:106
16. require_once('/var/www/swelltek/li.../template-loader.php')
    wp-blog-header.php:19
17. require('/var/www/swelltek/live/wp-blog-header.php')
    index.php:17