Get issues list filtered by project

Hi all. I am trying to user Youtrack REST API to get issues list from particular project.

By documentation info I combine request:

/api/issues?query=project:%20TestProject

But in response I got an error:

{

  "error": "invalid_query",

  "error_description": "Can't parse search query, please check and update query syntax",

  "error_developer_message": "Can't parse search query",

  "error_field": "query",

  "error_children": [

    {

    "error": "The value \"TestProject\" isn't used for the project field.",

    "error_description": ""

    }

  ]

}