how to remove the following error messages
hello who can tell me how to remove the following error messages :
Warning: array_keys() [function.array-keys]: The first argument should be an array in /home/users4/b/brunom/www/
wp-includes/taxonomy.php on line 2411
Warning: implode() [function.implode]: Invalid arguments passed in /home/users4/b/brunom/www/
wp-includes/taxonomy.php on line 2411
Warning: Invalid argument supplied for foreach() in /home/users4/b/brunom/www/
wp-includes/taxonomy.php on line 2418
thank you