FTB modpack download problem

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Fortis814

New Member
Aug 10, 2019
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Hi guys my ftblauncher start but i cant launch any modpack. What i need to do?

*Unhandled exception in Thread[AWT-EventQueue-0,6,main]: java.lang.NullPointerException
Logging in...
Beginning authlib authentication attempt
successfully created YggdrasilAuthenticationService
Minecraft authentication servers might be down. Check @ help.mojang.com*

thanks for help :)

sry my english is bad.