Errors on post update

Hi.

I am getting some errors while updating a post. I reinstalled plugin but still it gives error.

Deprecated: mysql_real_escape_string(): The mysql extension is deprecated and will be removed in the future: use mysqli or PDO instead in /home/xxxx/xxx/xxxx/wp-content/plugins/ig-pagebuilder/core/core.php on line 372

Warning: mysql_real_escape_string(): Access denied for user ‘xxxxx’@’xxxxx’ (using password: NO) in /home/xxxxxx/wp-content/plugins/ig-pagebuilder/core/core.php on line 372

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not sure may be its after wordpress 3.9 update