So I found an air plane and wanted to try it on the high way that connects MD and WP.
It needed to gain some speed before fly, and once it flies, it goes super fast so I kinda got scared and took off from acceleration which resulted crash in the forest. When it crashed, my character wasn't able to move at all (only minor injury after crash). It was a bug that he was only moving his legs in the forest. So I exited to main menu and re-connected to my sandbox. And this time, it was a just black screen but I hear my character walking, could able to hear zombies around me. I restared game couple times but result was same. How can i fix this black screen bug or issue? I don't wanna lose my sandbox mode and start all new again :(