Yii 2 postgres migrations?

Question

Yii

still in the first there were dances with a tambourine with postgres. I thought they would fix it in the second ... naive ....
connection

'yii\db\Connection',
    //'dsn' => 'mysql:host=localhost;dbname=localdb',
    'dsn' => 'pgsql:host=***.ru;port=5432;dbname=DB_**',
    'username' => 'postgres',
    'password' => '****',
    'schemaMap' => [
        'pgsql' => [
            'class' => 'yii\db\pgsql\Schema',
            'defaultSchema' => 'yii2' //specify your schema here
        ]
    ],
    'charset' => 'utf8',
];

when creating the user database through migration, I get

Creating migration history table "migration"...Exception 'yii\db\Exception' with message 'SQLSTATE[3F000]: Invalid schema name: 7 ERROR: no schema has been
selected to create in