Warning: call_user_func_array() [function.call-user-func-array]: First argument is expected to be a valid callback, ‘ngg_test’ was given in /home1/buckman/public_html/wp-includes/plugin.php on line 213

Line 213 is $value=

do {
foreach( (array) current($wp_filter[$tag]) as $the_ )
if ( !is_null($the_[‘function’]) ){
$args[1] = $value;
$value = call_user_func_array($the_[‘function’], array_slice($args, 1, (int) $the_[‘accepted_args’]));
}

I would like to continue to use this plugin for a feature we are putting together for our member.

https://www.ads-software.com/plugins/nextgen-public-image-uploader/

I just updated to 2.0.1 and I get this error : Warning: call_user_func_array() [function.call-user-func-array]: First argument is expected to be a valid callback, ‘woocommerce_price_filter_init’ was given in /homepages/36/d416291444/htdocs/FllOb/wp-includes/plugin.php on line 406

On store, I haven’t product images.

Sorry if my english is bad, I’m French.

https://www.ads-software.com/extend/plugins/woocommerce/

Anyone else seen this?

Warning: call_user_func_array() [function.call-user-func-array]: First argument is expected to be a valid callback, ‘vasthtml::do_flush_rules’ was given in /webroot/j/c/jclao001/primary/www/wp-includes/plugin.php on line 395

Warning: call_user_func_array() [function.call-user-func-array]: First argument is expected to be a valid callback, ‘vasthtml::set_rewrite_qvars’ was given in /webroot/j/c/jclao001/primary/www/wp-includes/plugin.php on line 166

The site is blocked, visitors can’t navigate the site

Can anyone please help ?

Thanks
Stephan

Please look at this page:
https://www.mgrear.com/news/

I was trying to delete the >> before each of my popular posts listings. I did a search for the character. I found one in a configuration file (I don’t remember which one!), deleted it, saw this error, put the character back, but now I am still getting the error.

The error is:

Warning: call_user_func_array() [function.call-user-func-array]: First argument is expected to be a valid callback, ‘feed_links_extra’ was given in D:\home\mgrear.com\wwwroot\news\wp-includes\plugin.php on line 339

Does anyone know how I can fix this?!