M?nh th?c hi?n th?m kho APT c?a hanoilug, v?i c?u l?nh: sudo wget -o- http://apt.hanoilug.org/hanoilug-keyring.gpg | sudo apt-key add -
th? c? th?ng b?o l?: "gpg: no valid OpenPGP data found" M?nh ch?a hi?u th?ng b?o tr?n l? g?? ph?i l?m g? ti?p theo ??y? Mong nh?n ???c s? gi?p ??. thanks.
