ELEX WooCommerce Role Based Pricing (BASIC) - Fatal Error on Role-Based Pricing Setup

Overview of the issue

If you are using the ELEX WooCommerce Role Based Pricing (BASIC) plugin, you may encounter a fatal error when configuring different prices for each user role if the WooCommerce Multilngual multicurrency feature is not activated:

PHP Fatal error:  Uncaught Error: Call to a member function get_client_currency() on null in .../wp-content/plugins/elex-woocommerce-role-based-pricing-plugin-basic/includes/elex-price-discount-admin.php:642

Workaround

Please, make sure of having a full backup of your site before proceeding.

• Open …/wp-content/plugins/elex-woocommerce-role-based-pricing-plugin-basic/includes/elex-price-discount-admin.php file.
• Look for line 639.
• Replace:

  				if ( is_plugin_active( 'woocommerce-multilingual/wpml-woocommerce.php' ) ) {
  

• With:

  				if ( is_plugin_active( 'woocommerce-multilingual/wpml-woocommerce.php' ) && wcml_is_multi_currency_on() ) {