Warning: call_user_func_array()
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Hi, I installed ShareThis on WC 2.1.3 and it shows a warning:
Warning: call_user_func_array() expects parameter 1 to be a valid callback, first array member is not a valid class name or object in /home/xxx/domains/xxx/public_html/wp-includes/plugin.php on line 429What is that?
https://ww.wp.xz.cn/plugins/woocommerce-sharethis-integration/
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