mbeldingjr2

I've recently been trying to create a modpack for the first time and have up to this point had 0 issues. Now when trying to upload a location for the zip file to download from I keep receiving the error "The Modpack Location you specified is not a valid ZIP file.". I've tried the hosting sites used in tutorials and some ideas in other forums but have not found any concrete solutions to this issue. I've switched "dl=0" to "dl=1" and tried replacing "https://www.dropbox.com" with "https://dl.dropboxusercontent.com" For those curious I'm attempting to use Dropbox and have tried both MEGA and Google Drive. The Dropbox address is "https://www.dropbox.com/s/f91wh360gc8a0df/ECTM.rar?dl=0".