Critical error – unable to use the plugin

Good afternoon,

We are currently unable to use the plugin due to a critical error received 30 mins ago that we have been unable to diagnose and fix. Our wordpress installation will not work unless the plugin is disabled.

Error Details
=============
An error of type E_ERROR was caused in line 1601 of the file /home/simpleca/public_html/wp-content/plugins/woocommerce-multi-currency/includes/data.php. Error message: Uncaught TypeError: property_exists(): Argument #1 ($object_or_class) must be of type object|string, null given in /home/simpleca/public_html/wp-content/plugins/woocommerce-multi-currency/includes/data.php:1601
Stack trace:
#0 /home/simpleca/public_html/wp-content/plugins/woocommerce-multi-currency/includes/data.php(1601): property_exists()
#1 /home/simpleca/public_html/wp-content/plugins/woocommerce-multi-currency/includes/data.php(1318): WOOMULTI_CURRENCY_Data->get_xe_exchange()
#2 /home/simpleca/public_html/wp-content/plugins/woocommerce-multi-currency/frontend/update.php(84): WOOMULTI_CURRENCY_Data->get_exchange()
#3 /home/simpleca/public_html/wp-includes/class-wp-hook.php(341): WOOMULTI_CURRENCY_Frontend_Update->update_exchange_rate()
#4 /home/simpleca/public_html/wp-includes/class-wp-hook.php(365): WP_Hook->apply_filters()
#5 /home/simpleca/public_html/wp-includes/plugin.php(522): WP_Hook->do_action()
#6 /home/simpleca/public_html/wp-settings.php(742): do_action()
#7 /home/simpleca/public_html/wp-config.php(97): require_once(‘/home/simpleca/…’)
#8 /home/simpleca/public_html/wp-load.php(50): require_once(‘/home/simpleca/…’)
#9 /home/simpleca/public_html/wp-blog-header.php(13): require_once(‘/home/simpleca/…’)
#10 /home/simpleca/public_html/index.php(17): require(‘/home/simpleca/…’)
#11 {main}
thrown