С чем может быть связано данная ошибка
автор
Notice: Undefined index: onehalf_margin_type in test/public_html/wp-content/plugins/easy-columns/easy-columns.php on line 114

Notice: Undefined index: threequarter_margin_type in test/public_html/wp-content/plugins/easy-columns/easy-columns.php on line 118

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.) in test/public_html/wp-includes/functions.php on line 2959

Notice: Use of undefined constant ddsg_language - assumed 'ddsg_language' in test/public_html/wp-content/plugins/sitemap-generator/sitemap-generator.php on line 45

Notice: Trying to get property of non-object in test/public_html/wp-includes/post-template.php on line 270

Notice: Trying to get property of non-object in test/public_html/wp-includes/post-template.php on line 208