Xgail

So TechnicLauncher has always been buggy for me for whatever reason, even on multiple different computers, but it was working a while ago and now it's not. So basically what's happening is when I go to install a modpack, it works fine. But when I go to press "Play" it loads and then it stops at "Downloading Minecraft Assets" and just doesn't do anything. I really want to play on this launcher, so please try and help. https://pastebin.com/cK3BvGpB