Get all followers of a channel using followersFeed.items$.subscribe()

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[x] I've searched the Issues
[x] I've read the basic concepts
[x] I'm using the latest version

Question

I want to get all followers of a channel, the code below only works for small channels with up to 500 followers. Can someone help me to make it work for more followers?

Code

async function getFollowers(channel) {
    await ig.account.login(process.env.IG_USERNAME, process.env.IG_PASSWORD);

    const id = await ig.user.getIdByUsername(channel);
    const followersFeed = await ig.feed.accountFollowers(id);
    return new Promise((resolve, reject) => {
        let channels = [];

        followersFeed.items$.subscribe(
            followers => {
                channels = channels.concat(...followers.map(item => item.username));
            },
            error => {
                console.error("Error:", error);
                if (channels.length < 0) {
                    reject(error, channels);
                }
                else {
                    resolve(channels, true);
                }
            },
            () => {
                resolve(channels, false);
            }
        );
    });
};

Error and Output

Error: IgResponseError: GET /api/v1/friendships/47451104466/followers/?max_id=1050%7CQVFCZmtPME0zZW9IY3RyWFdGVVE4VTJQd3VJMm5YcF9UZi0wX0NiZ1FpeWhqSlJJQ1VoaVd4bW5OR1FDWnlkRHk5eHg1ak5EX0dOOE0zMVRjRXJ0WmotZg%3D%3D&order=default&query=&enable_groups=true - 401 Unauthorized; Please wait a few minutes before you try again.

dilame / instagram-private-api

Get all followers of a channel using followersFeed.items$.subscribe() #1750

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Question

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Error and Output