if (areValidationErrors(req, res)) return
if (!await doesVideoExist(req.params.videoId, res)) return
if (!await doesVideoCaptionExist(res.locals.videoAll, req.params.captionLanguage, res)) return
if (areValidationErrors(req, res)) return
if (!await doesVideoExist(req.params.videoId, res)) return
if (!await doesVideoCaptionExist(res.locals.videoAll, req.params.captionLanguage, res)) return