php - Symfony returning error : some parameters are missing. Please provide them -

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i'm trying install symfony on wamp server, i'm installing through composer. tried below command in cmd 

$ composer create-project symfony/framework-standard-edition sym2

above command installing symfony latest version on wamp in end returning error or request edit something.

creating "app/config/parameters.yml" file`

i attached cmd screen shot reference, can on guide me how can solve issue. have update composer phar before installing symfony.

enter image description here

it's not bug (error), it's feature.

there's no error, information.

cmd waits provide values these missing parameters. right here in command line, not directly parameters.yml file.

currently on screen it's waiting provide database_host or press enter apply default value shown in brackets (127.0.0.1).

this interactive management of parameters.yml file


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