Critical error when adding product to cart
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When I click add to cart on any product in my store, a “critical error” occurs with the following line:
Fatal error: Uncaught Error: Call to a member function woocs_exchange_value() on bool in /var/www/vhosts/(my website url)/httpdocs/wp-content/plugins/flexible-shipping/classes/table-rate/multicurrency.php:112
This happened randomly about 10 days ago when I was testing my site. None of the plugins required any updates at the time, and 10 days later today I have updated all plugins and am still getting this error.
I do have the WOOCS Currency Switcher plugin installed, and when I deactivate it the add to cart function works normally. No settings were changed. I had thought that both Flexible Shipping and WOOCS plugins were compatible, and it was, up until 10 days ago.
Is this a new compatibility issue or? How do I fix this?
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