Could not pass event EntityChangeBlockEvent

### WorldEdit Version

7.3.17 Beta 1

### WorldGuard Version

7.0.14

### Platform Version

Paper 1.21.8-60-main@29c882

### Confirmations

- [x] I am using the most recent Minecraft release.
- [x] I am using a version of WorldEdit compatible with my Minecraft version.
- [x] I am using a version of WorldGuard compatible with my Minecraft version.
- [x] I am using the latest or recommended version of my platform software.
- [x] I am NOT using a hybrid server, e.g. a server that combines Bukkit and Forge. Examples include Arclight, Mohist, and Cardboard.
- [x] I am NOT using a fork of WorldEdit, such as FastAsyncWorldEdit (FAWE) or AsyncWorldEdit (AWE)

### Bug Description

Keep getting;
```
[Server thread/ERROR]: Could not pass event EntityChangeBlockEvent to WorldGuard v7.0.14+2339-43997ec
java.lang.NullPointerException: null
```
in the console.

The error appears simultaneously with entities (passive mobs, carts, item frames) disappearing all around the server on loaded chunks.

### Expected Behavior

Entities not disappearing.

### Reproduction Steps

No found ways for clear reproduction.

### Optional WorldGuard-Report

https://paste.enginehub.org/6BXKg9H-_.report

### Anything Else?

We suspect it might be linked to entities randomly disappearing.
Tested it with both WE 7.3.16 and 7.3.17 Beta 1, error still occurs.