WooCommerce - Sessions expiring causing cart to be empty on WooCommerce
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Problem - WooCommerce cart appears empty after a few minutes
Occasionally with WooCommerce you may notice your cart appears empty after a few minutes when it shouldn't be.
Resolution - WooCommerce cart appears empty after a few minutes
In researching this problem, we have found the following solution.
In the MySQL database, for the wp_woocommerce_sessions table, the session_id column needs the "Auto-Increment" (A_I) enabled.