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Upon upgrading to 2.8.4 a half hour or so ago the below error continues to be displayed on the top of each page.
Warning: call_user_func_array() expects parameter 1 to be a valid callback, function ‘return false;’ not found or invalid function name in /home/<wp_path>/public_html/wp/wp-includes/plugin.php on line 235
After editing a file and updating the page via post.php, the following three errors are displayed:
Warning: call_user_func_array() expects parameter 1 to be a valid callback, function ‘return false;’ not found or invalid function name in /home/wp_path>/public_html/wp/wp-includes/plugin.php on line 235
Warning: Cannot modify header information – headers already sent by (output started at /home/<wp_path>/public_html/wp/wp-includes/plugin.php:235) in /home/artsoflo/public_html/wp/wp-admin/post.php on line 197
Warning: Cannot modify header information – headers already sent by (output started at /home/<wp_path>/public_html/wp/wp-includes/plugin.php:235) in /home/artsoflo/public_html/wp/wp-includes/pluggable.php on line 1228
If I disable the plugin, the errors no longer appear.
Hi, I had a server 500 error, I checked the error_log and get the message:
[08-Jan-2016 07:31:08] PHP Parse error: syntax error, unexpected T_STRING in XXXXXXXXXXXXXXXXXXXXXXXX/wp-content/plugins/download-manager/download-manager.php on line 11
I download and updated to 2.8.5 but the error is the same.
@alidiaby, Extremely sorry for your inconvenience. In last update we have improved code base and using namespace, which require php v5.3.0+ ( http://php.net/manual/en/language.namespaces.rationale.php ), may you please update your server php version, however if that is not possible, you can get back the previous version from here https://downloads.wordpress.org/plugin/download-manager.2.8.3.zip
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