Missing Datasource Error: Datasource class could not be found. cake php 2.7 on localhost

Need Help
1

HI , Im using mysql database for localhost with wamp server and database connection object is not even gets created. Its giving error as below :

Missing Datasource

Error: Datasource class could not be found.

Notice: If you want to customize this error message, create app\View\Errors\missing_datasource.ctp

2

To be able to help, can you dump the full details of error log here…