Error when worldborder is set on true

[BrinDeNuage]

• I am running the latest version of RandomCoords
• Im running Java 8
• One Time Error?
• Reoccuring and replicable error?
• I have searched for this issue previously and it was either (1) not previously reported, or (2) previously fixed and I'm having the same problem.
• I am crashing and can provide my crash report(s)

• 1.12.2
• 1.11+
• 1.10+
• 1.9+
• 1.8 +
• 1.7+

Issue Description

When worldborder is set on true in the config and when I type /rtp nothing happen and an error is printed in the console.

Here is the error : https://image.noelshack.com/fichiers/2018/28/4/1531394387-untitled.png

Reproduce Steps

Additional Information