Attempting to load a world with the datapack selected causes the internal server to crash error log is screenshotted below, and here's a drive link with the pack in question, for debugging:
Tested with the Better MC mod pack, but I currently have no reason to suspect mod conflicts.
https://drive.google.com/file/d/12SjDmyPnn12CbmPXG51oNdL8yxvBNZDp/view?usp=sharing

Hi, your starglade:aku/dj_grounded datapack is broken.
Ticking related things (such as the interval field in this case) should never be set to 0, as the game will crash when dividing by 0.
Set it to 1 and it should work.

Hi, your starglade:aku/dj_grounded datapack is broken. Ticking related things (such as the interval field in this case) should never be set to 0, as the game will crash when dividing by 0. Set it to 1 and it should work.

Ah, understood, will forward this to the pack dev!