Issue Description: Dynmap crashes game once the world begins to load in around the player. Game launches just fine and pre loading for the world progresses normally. This may be due to a mod incompatibility as my game is heavily modded.

• Dynmap Version: Dynmap-3.2-beta-3-forge-1.16.5
• Server Version: forge ver 36.2.0
• Pastebin of Configuration.txt: default config used
• Pastebin of crashlogs or other relevant logs: https://pastebin.com/WE4weLnu
• Other Relevant Data/Screenshots: no shaders or texture packs used, mod list included inside of crash report at the end.

[yes] I have looked at all other issues and this is not a duplicate
[yes] I have been able to replicate this

Dynmap is a server side mod and not a client side mod, it won't work on a modded client.