Hi. I am downloading Quicktime files (QT) from our advertising server. I work in the media industry. I love Firefox, but now that the "DOWNTHEMALL" extension has been made redundant, I try to use built in download. This starts my downloads, but they keep failing. How can I diagnose what the issue is? The download folder is an attached hard drive with 4TB of capacity, all other browsers on my laptop have no issues downloading files to it (Brave, Chrome, Safari), only Firefox fails at around 50 to 60% mark. What's up?