static async concat(ctx) {
        logger.info('Concat dataset with dataset id: ', ctx.params.dataset);
        ctx.assert(ctx.request.body.url || ctx.request.body.data || ctx.request.body.sources, 400, 'Url or data is required');
        ctx.assert(ctx.request.body.provider, 400, 'Provider required');
        if (ctx.request.body.dataset && (ctx.request.body.dataset.status !== 'saved' && ctx.request.body.dataset.status !== 'failed')) {