Fatal error: During inheritance of Countable: Uncaught Error: Class "DatabaseCondition" not found in /home/httpd/vhosts/lignon.ch/httpdocs/includes/database/select.inc:970
Stack trace:
#0 /home/httpd/vhosts/lignon.ch/httpdocs/includes/database/database.inc(874): SelectQuery->__construct('registry', 'r', Object(DatabaseConnection_mysql), Array)
#1 /home/httpd/vhosts/lignon.ch/httpdocs/includes/bootstrap.inc(3501): DatabaseConnection->select('registry', 'r', Array)
#2 /home/httpd/vhosts/lignon.ch/httpdocs/includes/bootstrap.inc(3422): _registry_check_code('class', 'MergeQuery_mysq...')
#3 /home/httpd/vhosts/lignon.ch/httpdocs/includes/database/database.inc(906): drupal_autoload_class('MergeQuery_mysq...')
#4 /home/httpd/vhosts/lignon.ch/httpdocs/includes/database/database.inc(2555): DatabaseConnection->merge('cache_bootstrap', Array)
#5 /home/httpd/vhosts/lignon.ch/httpdocs/includes/cache.inc(474): db_merge('cache_bootstrap')
#6 /home/httpd/vhosts/lignon.ch/httpdocs/includes/cache.inc(142): DrupalDatabaseCache->set('system_list', Array, 0)
#7 /home/httpd/vhosts/lignon.ch/httpdocs/includes/module.inc(209): cache_set('system_list', Array, 'cache_bootstrap')
#8 /home/httpd/vhosts/lignon.ch/httpdocs/includes/module.inc(89): system_list('module_enabled')
#9 /home/httpd/vhosts/lignon.ch/httpdocs/includes/module.inc(782): module_list(false, false, false)
#10 /home/httpd/vhosts/lignon.ch/httpdocs/includes/module.inc(962): module_implements('watchdog')
#11 /home/httpd/vhosts/lignon.ch/httpdocs/includes/bootstrap.inc(2026): module_invoke_all('watchdog', Array)
#12 /home/httpd/vhosts/lignon.ch/httpdocs/includes/errors.inc(207): watchdog('php', '%type: !message...', Array, 7)
#13 /home/httpd/vhosts/lignon.ch/httpdocs/includes/errors.inc(63): _drupal_log_error(Array, false)
#14 /home/httpd/vhosts/lignon.ch/httpdocs/includes/bootstrap.inc(2602): _drupal_error_handler_real(8192, 'Return type of ...', '/home/httpd/vho...', 1700)
#15 /home/httpd/vhosts/lignon.ch/httpdocs/includes/database/query.inc(1652): _drupal_error_handler(8192, 'Return type of ...', '/home/httpd/vho...', 1700)
#16 /home/httpd/vhosts/lignon.ch/httpdocs/includes/database/database.inc(1884): require_once('/home/httpd/vho...')
#17 /home/httpd/vhosts/lignon.ch/httpdocs/includes/database/database.inc(845): Database::loadDriverFile('mysql', Array)
#18 /home/httpd/vhosts/lignon.ch/httpdocs/includes/database/database.inc(905): DatabaseConnection->getDriverClass('MergeQuery', Array)
#19 /home/httpd/vhosts/lignon.ch/httpdocs/includes/database/database.inc(2555): DatabaseConnection->merge('cache_bootstrap', Array)
#20 /home/httpd/vhosts/lignon.ch/httpdocs/includes/cache.inc(474): db_merge('cache_bootstrap')
#21 /home/httpd/vhosts/lignon.ch/httpdocs/includes/cache.inc(142): DrupalDatabaseCache->set('bootstrap_modul...', Array, 0)
#22 /home/httpd/vhosts/lignon.ch/httpdocs/includes/module.inc(137): cache_set('bootstrap_modul...', Array, 'cache_bootstrap')
#23 /home/httpd/vhosts/lignon.ch/httpdocs/includes/module.inc(85): system_list('bootstrap')
#24 /home/httpd/vhosts/lignon.ch/httpdocs/includes/module.inc(23): module_list(true, true)
#25 /home/httpd/vhosts/lignon.ch/httpdocs/includes/bootstrap.inc(2780): module_load_all(true)
#26 /home/httpd/vhosts/lignon.ch/httpdocs/includes/bootstrap.inc(2534): _drupal_bootstrap_variables()
#27 /home/httpd/vhosts/lignon.ch/httpdocs/includes/bootstrap.inc(2672): drupal_bootstrap(3, false)
#28 /home/httpd/vhosts/lignon.ch/httpdocs/includes/bootstrap.inc(2526): _drupal_bootstrap_page_cache()
#29 /home/httpd/vhosts/lignon.ch/httpdocs/index.php(20): drupal_bootstrap(7)
#30 {main} in /home/httpd/vhosts/lignon.ch/httpdocs/includes/database/query.inc on line 1652