Pufferfish 1.21.3 -- Error on startup & plugin disable

Bug Report

SpigotMC Username

Please provide your SpigotMC username:

Username: Ksewedo5

Version

Please provide the version by using the /fb about command: FeatherBoard 6.0.5b

Version: Pufferfish 1.21.3 

Debug Output

Optionally, include the output of the /fb debug command:

Debug Output: 

Error Stacktrace

If applicable, provide the error stacktrace:

Stacktrace: https://pastebin.com/AD5M9gEd 

Expected Outcome

Describe what you expected to happen:

Expected Outcome: 

Description

Provide a detailed description of the issue:

Description: Plugin don't start :D