Warning: Invalid argument supplied

Hi,

I’m getting the following warnings upon activating the plugin:

Warning: Invalid argument supplied for foreach() in /home/httpd/vhosts/xyz/domain.com/wp-content/plugins/mycryptocheckout/src/currencies_trait.php on line 48

Warning: Cannot modify header information - headers already sent by (output started at /home/httpd/vhosts/xyz/domain.com/wp-content/plugins/mycryptocheckout/src/currencies_trait.php:48) in /home/httpd/vhosts/xyz/domain.com/wp-content/plugins/woo-wallee/woocommerce-wallee.php on line 312

Please advice.

Thanks