There's currently a known issue when uploading videos or files to the element14 Community where that file or video is greater than 50mb in size.
The intended limit on file sizes is 2 gigabytes, however, there is currently an issue that is resulting in HTTP 50x/500 errors when attempting to upload files and videos that is preventing them to complete past a certain percentage.
Images above 1MB in size may also be affected. You can use https://squoosh.app/ to help optimise your images.
This has been escalated with Verint our platform vendor.