• Just updated to WP 4.9.1 on one of my sites and HC version 1.4.

    This error occurs only if the HC plugin is activated (and didn’t occur before I updated the plugin but after I had updated WP):

    Notice: register_uninstall_hook was called incorrectly. Only a static class method or function can be used in an uninstall hook. Please see Debugging in WordPress for more information. (This message was added in version 3.1.0.) in /**********/public_html/wp-includes/functions.php on line 4146

    • This topic was modified 7 years, 2 months ago by 7107 Digital.
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