Warning: call_user_func_array() errors

So H ave been getting the following errors:

Warning: call_user_func_array() expects parameter 1 to be a valid callback, function ‘do_css’ not found or invalid function name in /home/fresheye/public_html/rentlucky.com/wp-includes/plugin.php on line 470

Warning: call_user_func_array() expects parameter 1 to be a valid callback, function ‘do_jslibs’ not found or invalid function name in /home/fresheye/public_html/rentlucky.com/wp-includes/plugin.php on line 470

So far I have concluded that it is possibly related to this plugin.

Here is the lines in and around line 470 in the plugins.php

/**
 * Retrieve the name of an action currently being processed.
 *
 * @since 3.9.0
 *
 * @uses doing_filter()
 *
 * @param string|null $action Optional. Action to check. Defaults to null, which checks
 *                            if any action is currently being run.
 * @return bool Whether the action is currently in the stack.
 */
function doing_action( $action = null ) {
	return doing_filter( $action );
}

/**
 * Hooks a function on to a specific action.
 *
 * Actions are the hooks that the WordPress core launches at specific points
 * during execution, or when specific events occur. Plugins can specify that
 * one or more of its PHP functions are executed at these points, using the
 * Action API.
 *
 * @uses add_filter() Adds an action. Parameter list and functionality are the same.
 *
 * @since 1.2.0
 *
 * @param string $tag The name of the action to which the $function_to_add is hooked.
 * @param callback $function_to_add The name of the function you wish to be called.
 * @param int $priority optional. Used to specify the order in which the functions associated with a particular action are executed (default: 10). Lower numbers correspond with earlier execution, and functions with the same priority are executed in the order in which they were added to the action.
 * @param int $accepted_args optional. The number of arguments the function accept (default 1).
 */
function add_action($tag, $function_to_add, $priority = 10, $accepted_args = 1) {
	return add_filter($tag, $function_to_add, $priority, $accepted_args);
}

/**
 * Execute functions hooked on a specific action hook.
 *
 * This function invokes all functions attached to action hook $tag. It is
 * possible to create new action hooks by simply calling this function,
 * specifying the name of the new hook using the <tt>$tag</tt> parameter.
 *
 * You can pass extra arguments to the hooks, much like you can with
 * apply_filters().
 *
 * @see apply_filters() This function works similar with the exception that
 * nothing is returned and only the functions or methods are called.
 *
 * @since 1.2.0
 *
 * @global array $wp_filter Stores all of the filters
 * @global array $wp_actions Increments the amount of times action was triggered.
 *
 * @param string $tag The name of the action to be executed.
 * @param mixed $arg,... Optional additional arguments which are passed on to the functions hooked to the action.
 * @return null Will return null if $tag does not exist in $wp_filter array
 */
function do_action($tag, $arg = '') {
	global $wp_filter, $wp_actions, $merged_filters, $wp_current_filter;

	if ( ! isset($wp_actions[$tag]) )
		$wp_actions[$tag] = 1;
	else
		++$wp_actions[$tag];

	// Do 'all' actions first
	if ( isset($wp_filter['all']) ) {
		$wp_current_filter[] = $tag;
		$all_args = func_get_args();
		_wp_call_all_hook($all_args);
	}

	if ( !isset($wp_filter[$tag]) ) {
		if ( isset($wp_filter['all']) )
			array_pop($wp_current_filter);
		return;
	}

	if ( !isset($wp_filter['all']) )
		$wp_current_filter[] = $tag;

	$args = array();
	if ( is_array($arg) && 1 == count($arg) && isset($arg[0]) && is_object($arg[0]) ) // array(&$this)
		$args[] =& $arg[0];
	else
		$args[] = $arg;
	for ( $a = 2; $a < func_num_args(); $a++ )
		$args[] = func_get_arg($a);

	// Sort
	if ( !isset( $merged_filters[ $tag ] ) ) {
		ksort($wp_filter[$tag]);
		$merged_filters[ $tag ] = true;
	}

	reset( $wp_filter[ $tag ] );

	do {
		foreach ( (array) current($wp_filter[$tag]) as $the_ )
			if ( !is_null($the_['function']) )
				call_user_func_array($the_['function'], array_slice($args, 0, (int) $the_['accepted_args']));

	} while ( next($wp_filter[$tag]) !== false );

	array_pop($wp_current_filter);
}

Suggestions ideas?

Where would I add the missing functions?

https://wordpress.org/plugins/tinymce-advanced/