API Positions not update

hello i'm using traccar version 4.5 and database postgresql.
how to update api/positions because my api positions not update but api/devices {positionId} update

configuration my traccar.

<!-- Unknown Device -->
<entry key='database.registerUnknown'>true</entry>
<entry key='database.registerUnknown.defaultGroupId'>2</entry>

    <entry key='database.selectLatestPositions'>
        SELECT tc_positions.* FROM tc_positions INNER JOIN tc_devices ON tc_positions.id = tc_devices.positionid;
    </entry>