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Multer in Nextjs, req.file is undefined?

pages/api/upload:
export default async (req: INextReq, res: NextApiResponse) => {
    if (req.method !== "GET") {
        return res.status(400).json({ success: false, message: "Use only GET method" });
    }

    return UploadLogics.testUpload(req)
        .then((data) => res.status(200).json(data))
        .catch((error) => res.status(400).json(error));
};


UploadLogics:
class UploadLogics {
    static async testUpload(req: INextReq) {
        uploadService("file", "SINGLE", "user");
        return { file: `File: ${req.file}` };
    }
}


uploadService:
export const config = {
    api: {
        bodyParser: false
    }
};

export default (name: string, type: TType, directory: TDirectory) => {
    const allowedTypes: Array<string> = ["SINGLE", "ARRAY"];

    if (!allowedTypes.includes(type)) {
        throw new Error(`Type ${type} not support. See this types: ${allowedTypes.join(", ")}`);
    }

    const storage = multer.diskStorage({
        destination: (req, file, cb) => {
            cb(null, path.relative(`${PROJECT_ROOT}`, `./public/uploads/${directory}`));
        },
        filename: (req, file, cb) => {
            cb(null, `${file.fieldname}_${Date.now}${path.extname(file.originalname)}`);
        }
    });

    const image = multer({ storage, limits: { fieldSize: 25 * 1024 * 1024 } });

    let upload = null;

    switch (type) {
        case SINGLE:
            upload = image.single(name);
            break;
        case ARRAY:
            upload = image.array(name);
            break;
        default:
            return upload;
    }

    return upload;
};


Возвращает undefined при выводе req.file, что может быть не так?

gcyFS.png
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