Title: Warning: call_user_func_array()
Last modified: August 21, 2016

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# Warning: call_user_func_array()

 *  [webby1973](https://wordpress.org/support/users/webby1973/)
 * (@webby1973)
 * [12 years, 3 months ago](https://wordpress.org/support/topic/warning-call_user_func_array-17/)
 * 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 429
 * What is that?
 * [https://wordpress.org/plugins/woocommerce-sharethis-integration/](https://wordpress.org/plugins/woocommerce-sharethis-integration/)

The topic ‘Warning: call_user_func_array()’ is closed to new replies.

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## Tags

 * [warning](https://wordpress.org/support/topic-tag/warning/)

 * 0 replies
 * 1 participant
 * Last reply from: [webby1973](https://wordpress.org/support/users/webby1973/)
 * Last activity: [12 years, 3 months ago](https://wordpress.org/support/topic/warning-call_user_func_array-17/)
 * Status: not resolved