I use Dexie to store data on the brozwser using HTML and javascript,

I have no problem when I store data but I have an issue when I get data to IndexedDb

this my code to get data

var db = new Dexie('database_name');

function get_content(id) {

        id = parseInt(id);
        var content = db.downloads.get(id);
        return content;
    }

console.log(get_content(3))

And I get this error

Cannot read properties of undefined (reading 'get') when getting data

I save the data in the browser using the db.downloads.add() method. ".downloads" is the name of the table

Why do I get this error?