Fatal Error in functions-api

Hi Fahad,

Could you please help us with this?

Fatal error: Uncaught TypeError: array_key_exists(): Argument #2 ($array) must be of type array, null given in /home/public_html/wp-content/plugins/stock-locations-for-woocommerce/inc/functions-api.php:19 Stack trace: #0 /home/public_html/wp-includes/class-wp-hook.php(324): {closure}() #1 /home/public_html/wp-includes/class-wp-hook.php(348): WP_Hook->apply_filters() #2 /home/public_html/wp-includes/plugin.php(517): WP_Hook->do_action() #3 /home/public_html/wp-settings.php(727): do_action() #4 /home/public_html/wp-config.php(130): require_once('…') #5 /home/public_html/wp-load.php(50): require_once('…') #6 /home/public_html/wp-blog-header.php(13): require_once('…') #7 /home/public_html/index.php(17): require('…') #8 {main} thrown in /home/public_html/wp-content/plugins/stock-locations-for-woocommerce/inc/functions-api.php on line 19