Unable to activate: Fatal error: Call to undefined function

  • Resolved Linda Ursin

    (@svehex)


    8 years, 3 months ago

    Hi

    I get this error when I try to enable Currency Switcher:

    Fatal error: Call to undefined function filter_var() in …./wp-content/plugins/woocommerce-currency-switcher/classes/storage.php on line 29

    I’m running three separate WooCommerce 2.4.12 on WordPress 4.4 on a network setup. I get this error on all of them, even though they use different plugins.

    https://wordpress.org/plugins/woocommerce-currency-switcher/

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