Additional uncaught exception thrown while handling exception.

Original

RedisException: read error on connection to localhost:6379 in Redis->watch() (line 55 of /home/www/ksa.ch/htdocs/sites/all/modules/contrib/redis/lib/Redis/Lock/PhpRedis.php).

Additional

RedisException: Redis server localhost:6379 went away in Redis->hGetAll() (line 48 of /home/www/ksa.ch/htdocs/sites/all/modules/contrib/redis/lib/Redis/Cache/PhpRedis.php).