Can't Enter Crypt of Skele King

While playing solo, I DC'd right after entering the crypt of the skeleton king (the skeletons that come out of the door had just finished appearing). After logging back in, I am now unable to enter the crypt. I am at the checkpoint right outside the crypt door and when I click the door, the door opening effect happens but once it finishes I am still unable to enter. I tried making the game public and everyone who joined was also unable to enter the crypt.
I have quit the game and started from the pre-crypt checkpoint and the same thing mentioned above happens.