Hi, I am developing a Flutter app and using Publit,io to host video files uploaded by users. I am currently following this post: <a href="https://itnext.io/serverless-video-upload-and-encoding-with-firebase-storage-cloud-functions-and-publitio-a4b2997b1508</br" rel="nofollow" >https://itnext.io/serverless-video-upload-and-encoding-with-firebase-storage-cloud-functions-and-publitio-a4b2997b1508</br</a>> Everything was working fine but now most videos are not accessible because the access token has been expired. I don't know how to generate a new Access Token for my Flutter App to access video contents. In the app, I simply use the download_url (provided after a successful upload) to get the video. Could you please provide the solution or some pointers for my use case? Thank You