Fatal error: Uncaught Error: Class "Redis_TTL_Cache" not found in /var/www/html/includes/cache.inc:32
Stack trace:
#0 /var/www/html/includes/cache.inc(57): _cache_get_object('cache_bootstrap')
#1 /var/www/html/includes/module.inc(763): cache_get('module_implemen...', 'cache_bootstrap')
#2 /var/www/html/includes/module.inc(963): module_implements('system_theme_in...')
#3 /var/www/html/modules/system/system.module(2522): module_invoke_all('system_theme_in...')
#4 /var/www/html/includes/theme.inc(798): _system_rebuild_theme_data()
#5 /var/www/html/includes/theme.maintenance.inc(57): list_themes()
#6 /var/www/html/includes/bootstrap.inc(2953): _drupal_maintenance_theme()
#7 /var/www/html/includes/errors.inc(177): drupal_maintenance_theme()
#8 /var/www/html/includes/bootstrap.inc(2678): _drupal_log_error(Array, true)
#9 [internal function]: _drupal_exception_handler(Object(ParseError))
#10 {main}
thrown in /var/www/html/includes/cache.inc on line 32