Uncaught exception thrown in shutdown function.

<br />
<b>Fatal error</b>:  Uncaught Error: Call to undefined function browscap_get_browser() in /home/radioportal/www/radioportal/sites/all/themes/clean_theme_v2/template.php:3
Stack trace:
#0 /home/radioportal/www/radioportal/themes/engines/phptemplate/phptemplate.engine(14): include_once()
#1 /home/radioportal/www/radioportal/includes/theme.inc(216): phptemplate_init()
#2 /home/radioportal/www/radioportal/includes/theme.maintenance.inc(74): _drupal_theme_initialize()
#3 /home/radioportal/www/radioportal/includes/bootstrap.inc(2945): _drupal_maintenance_theme()
#4 /home/radioportal/www/radioportal/includes/errors.inc(177): drupal_maintenance_theme()
#5 /home/radioportal/www/radioportal/includes/bootstrap.inc(2670): _drupal_log_error()
#6 [internal function]: _drupal_exception_handler()
#7 {main}
  thrown in <b>/home/radioportal/www/radioportal/sites/all/themes/clean_theme_v2/template.php</b> on line <b>3</b><br />
<h1>Uncaught exception thrown in shutdown function.</h1><p>PDOException: SQLSTATE[HY000]: General error: 2006 MySQL server has gone away: DELETE FROM {semaphore} 
WHERE  (value = :db_condition_placeholder_0) ; Array
(
    [:db_condition_placeholder_0] =&amp;gt; 365275186688f79a338a7c9.29782880
)
 in lock_release_all() (line 269 of /home/radioportal/www/radioportal/includes/lock.inc).</p><hr />