[CRASH] Ticking Entity crash upon Ghast shooting a fireball

[Nidoskull]

Describe the bug
Server crashes when a Ghast shoots a fireball, due to ticking entity. Logs seem to imply that LightWithin is trying to get the generic.attack_damage of an entity that does not have any.

What caused it

1. Enter the Nether in Survival mode.
2. Encounter a Ghast.
3. Have your light activate (as in, reach the conditions to be able to use it)
4. Crash shortly after.

Version information
LightWithin mod version: 2.0.1+1.21.1
Minecraft version: 1.21.1
Fabric API version: 0.116.6+1.21.1

Screenshots and files
https://mclo.gs/euoU0R5

Additional context
I am reporting this on behalf of @Ninty9 - if more info is needed, she's got server access, I don't 😛

[Nidoskull]

Addendum: Managed to reproduce it in singleplayer. The crash report above and this new log are both with the UUID of 4432165b-2322-4fc3-88d2-5bb8ba7e8aa1 (earthen ally light). These both have a ticking entity of a fireball.
Additionally, my own UUID of 692af28d-95cb-438a-b1a0-bdc9ef232ee8 (aqua variant light) results in a ticking player instead; here's that log.

[Nidoskull]

Happened again, this time with yet another user. Log here, their UUID is 9a6103b2-a433-464f-a31a-e7d08230d3c0.