The main reason for the offline mode error of the Rockstar Game Launcher is most of the time the minor bugs. Sometimes it happens due to the corrupted game files, sometimes the antivirus or firewall issue. In some cases, the problems can be a little different, this happens due to the ...
Wait a few moments, then reconnect your keyboard or controller to your device. Hold on for a few more moments, and you should enter the Diamond Casino Heist mission directly. This will allow you to bypass the bug causing the black screen glitch. After following the instructions above, you c...