Mahara: Site unavailable

Mahara could not connect to the application database.

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* If you are the administrator, please check your database settings and make sure your database is available

The error received was:
mysqli error: [2003: Can't connect to MySQL server on 'mysql_mahara.alm.ulpgc.es' (111)] in CONNECT(mysql_mahara.alm.ulpgc.es, 'mahara', '****', mahara)