Hello, I have a problem with Warcraft 3, it’s about the last Frozen Throne campaign in which the main character is Rexxar, my problem is that every time I go to complete a mission in the Tunnels of Orgrimmar or the Thunder Mountains and come back I will get errors such as invisible characters Nazgrel, Drekthar, Gazlou, as well as enemy characters, if you can help me, please contact me in advance, thanks