Facebook Gallery

exception 'Zend_Cache_Exception' with message 'Invalid id or tag '' : must use only [a-zA-Z0-9_]' in /usr/share/php/libzend-framework-php/Zend/Cache.php:208 Stack trace: #0 /usr/share/php/libzend-framework-php/Zend/Cache/Core.php(673): Zend_Cache::throwException('Invalid id or t...') #1 /usr/share/php/libzend-framework-php/Zend/Cache/Core.php(302): Zend_Cache_Core::_validateIdOrTag('') #2 /var/www/wp_network_production/wp-content/themes/ncsy-region-theme/inc/facebook-gallery.php(70): Zend_Cache_Core->load('') #3 /var/www/wp_network_production/wp-content/themes/ncsy-region-theme/inc/facebook-gallery.php(39): FBPage->getCachedGallery() #4 /var/www/wp_network_production/wp-content/themes/ncsy-region-theme/gallery-gallery.php(17): FBPage->getAlbums() #5 /var/www/wp_network_production/wp-includes/theme.php(1117): require('/var/www/wp_net...') #6 /var/www/wp_network_production/wp-includes/theme.php(1091): load_template('/var/www/wp_net...', false) #7 /var/www/wp_network_production/wp-includes/general-template.php(128): locate_template(Array, true, false) #8 /var/www/wp_network_production/wp-content/themes/ncsy-region-theme/page-gallery.php(19): get_template_part('gallery', 'gallery') #9 /var/www/wp_network_production/wp-includes/template-loader.php(43): include('/var/www/wp_net...') #10 /var/www/wp_network_production/wp-blog-header.php(16): require_once('/var/www/wp_net...') #11 /var/www/wp_network_production/index.php(17): require('/var/www/wp_net...') #12 {main} Warning: Invalid argument supplied for foreach() in /var/www/wp_network_production/wp-content/themes/ncsy-region-theme/gallery-gallery.php on line 22