This crash happens whenever i open a Little tiles door that has any amount of activate child events i have already confered with the Dev of Little tiles and they pointed at AdvancedRocketryPlugin wich i assumed was advanced rocketry then advanced rocketry pointed at AVP
crash-2021-01-03_23.23.24-server.txt

To provide some more information. LittleTiles has doors, which when activated create an animation entity. This entity contains a fake world, which is basically a subworld and used to organize the rendering and collision for the animation. This is not the first time a different mod has problems with it, there were plenty of issue with SpongeForge, but by implementing their interfaces the issues could be solved. I have no idea why it crashes this time, maybe it's something you can fix on your end, or maybe I need to change something. Just let me know!