Hi Elias,
Sorry for the delay. I am on WordPress 5.7 and CLUEVO 1.6.2.
This happens when trying to add a Module. I have a few different SCORM files of varying sizes, when uploading a smaller one it successfully uploads and installs but I cannot view the module. The larger ones which I had to pre-upload to the site, fail when trying to install. It says “Installation failed. Upload Failed.” however it is already uploaded on the root of the website. When this happens, looking in the developer tools the POST request returns a 500 Internal Server Error.
Thanks.