Fatal error: Uncaught MongoDB\Driver\Exception\ConnectionTimeoutException: No suitable servers found (`serverSelectionTryOnce` set): [socket timeout calling hello on 'ac-t4o2g9s-shard-00-00.ai1f5fl.mongodb.net:27017'] [socket timeout calling hello on 'ac-t4o2g9s-shard-00-01.ai1f5fl.mongodb.net:27017'] [socket timeout calling hello on 'ac-t4o2g9s-shard-00-02.ai1f5fl.mongodb.net:27017'] in /workspace/inc/MongoDB/functions.php:520
Stack trace:
#0 /workspace/inc/MongoDB/functions.php(520): MongoDB\Driver\Manager->selectServer(Object(MongoDB\Driver\ReadPreference))
#1 /workspace/inc/MongoDB/Collection.php(687): MongoDB\select_server(Object(MongoDB\Driver\Manager), Array)
#2 /workspace/inc/Memcache.php(18): MongoDB\Collection->findOne(Array)
#3 /workspace/currencies.php(8): Memcache->get('miner_cost')
#4 /workspace/index.php(20): require_once('/workspace/curr...')
#5 {main}
  thrown in /workspace/inc/MongoDB/functions.php on line 520