GaxiosError: Login Required

I am trying to upload a video to YouTube using Node.js, but I keep encountering a "Login Required" error consistently. I have confirmed that I have the access token correctly as I can log it in my console. Below is the complete code for performing the upload operation. The code includes the necessary context for understanding the issue.

exports.acceptSubmit = async (req, res) => {    try {        const notificationId = req.params.notificationId;        // Find the notification by ID        const notification = await Notification.findById(notificationId);        if (!notification) {            return res.status(404).json({ message: "Notification not found." });        }        // Get the creator's user ID from the notification        const creatorId = notification.creatorId;        // Find the creator based on creatorId        const creator = await User.findById(creatorId);        if (!creator) {            return res.status(404).json({ message: "Creator not found." });        }        // Get the creator's access token        console.log(creator);        const accessToken = creator.accessToken;        const pendingVideo = await PendingVideo.findById(notification.videoId);        if (!pendingVideo) {            return res.status(404).json({ message: "Pending video not found." });        }        const videoTitle = pendingVideo.title;        const videoDescription = pendingVideo.description;        const videoUrl = pendingVideo.videoUrl; // Assuming this is the S3 URL        const thumbnailUrl = pendingVideo.thumbnailUrl; // Assuming this is the S3 URL for thumbnail        // authenticate with the YouTube Data API using the creator's access token        const youtube = google.youtube({            version: 'v3',            auth: accessToken,        });        const videoResponse = await youtube.videos.insert({            part: 'snippet,status',            requestBody: {                snippet: {                    title: videoTitle,                    description: videoDescription,                },                status: {                    privacyStatus: 'public', // or 'private' or 'unlisted'                },            },            media: {                mimeType: 'video/*',                body: s3.getObject({                    Bucket: 'editingfiles',                    Key: 'videos/1693044658221-Course_selling_done.mp4',                }).createReadStream(),            },        });        // get the uploaded video's ID        const videoId = videoResponse.data.id;        // upload the thumbnail        const thumbnailResponse = await youtube.thumbnails.set({            videoId: videoId,            media: {                mimeType: 'image/jpeg', // or 'image/png'                body: s3.getObject({                    Bucket: 'editingfiles',                    Key: 'thumbnails/1693044658221-server code.png',                }).createReadStream(),            },        });        return res.json("all good");    } catch (error) {        console.error(error);        res.status(500).json({ message: "Server error." });    }};I have attempted to regenerate the token, but I continue to receive the same error. I am expecting the code to successfully upload the video to YouTube using the provided access token.ErrorGaxiosError: Login Required.Any insights into why I might be encountering the "Login Required" error would be greatly appreciated.