Can't Download Modpacks

[Swii]

Any modpack i try to install starts downloading, and stops midway through. I don't know much about it, but ill leave my log here if anyone can help. THANKS!

Log.txt

[AetherPirate]

Attachments do not work, use pastebin. 

It is also worth checking if this is your issues: 

 

[Swii]

https://pastebin.com/yzCvgMZ3

[AetherPirate]

Try disabling your antivirus / firewall and try again