There was an error in one of the early snapshots - when trying to change the growth stage of torchflower using the debug stick, the game crashed and the world no longer started.

At 1.20 pre-release 1 - the error continues to exist. Now I noticed it when a bee pollinated torchflower and it grew up, after which the game crashed.

You are unable to enter the world again as it will automatically crash the game