[BUG] JDA init error on 1.15.2

[simonchow96]

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• If you are running the plugin at first time, try to run again to see if the problem persists.
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Describe the bug I have UltimateChat b243 with JDA on Paper 1.15.2. When JDA is being initialized, an error stopped it from loading completely.

To Reproduce Steps to reproduce the behavior: Simply install UltimateChat and JDA on Paper 1.15.2. Start the server instance.

Expected behavior JDA loaded successfully

Screenshots and LOGs https://pastebin.com/tTf2nUDv

Server and plugins versions (please complete the following information):

• Server: Paper 1.15.2
• Plugin Version: UltimateChat-1.8.9-b243-Universal
• Java Version: Java 1.8

Additional context None at the moment

[FabioZumbi12]

Jedis re-added on latest dev build.