I am having a PHP webservice that is connected with MongoDB server hosted on MongoHQ suddenly i got this exception:
exception 'MongoConnectionException' with message 'Operation now in progress' in /****/classes/mongo.db.class.php:8 Stack trace: #0 /****/classes/mongo.db.class.php(8): Mongo->__construct('***********') #1 /filepath/filename.php(14): include_once('******') #2 {main}Problem during mongodb initialization. Please start mongodb server.
What is this exception about? I dont know what shall i do with it? how to start MongoDB Server?