Issue Description: Dynmap causes crashing for server on startup. Disabling it causes the server to launch properly.

• Dynmap Version: dynmap-v3.4-beta-5 for Fabric
• Server Version: Fabric 1.19.1
• Server Host (if applicable): SelfHosted

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

Use the proper version for 1.19.1 or higher: https://dynmap.us/builds/dynmap/Dynmap-3.4-SNAPSHOT-fabric-1.19.1.jar