Additional uncaught exception thrown while handling exception.

Original

RedisException: read error on connection in Redis->exec() (line 70 of /var/www/schools/sites/all/modules/redis/lib/Redis/Cache/PhpRedis.php).

Additional

RedisException: LOADING Redis is loading the dataset in memory in Redis->hMset() (line 19 of /var/www/schools/sites/all/modules/redis/lib/Redis/Cache/PhpRedis.php).