Additional uncaught exception thrown while handling exception.

Original

Predis\Connection\ConnectionException: Error while reading line from the server in Predis\Connection\AbstractConnection->onConnectionError() (line 139 of /var/www/html/sites/all/libraries/predis-0.8/lib/Predis/Connection/AbstractConnection.php).

Additional

Predis\ServerException: LOADING Redis is loading the dataset in memory in Predis\Client->onResponseError() (line 291 of /var/www/html/sites/all/libraries/predis-0.8/lib/Predis/Client.php).