Bug description
On startup, I seem to get some non-critical error messages, a few seconds after startup a connection leak gets detected.

Steps to reproduce
Steps to reproduce the behaviour:

1. Run the plugin on Purpur 1.16.5 build 1090 (not sure if it matters).
2. See the console after the 'done' on startup.
3. Wait for max a minute or two and see the leak detection message.

Expected behaviour
No error messages and leak detection is triggered.

Screenshots
Not applicable, see Pastebin.

Pastebin
Error messages on startup: https://pastebin.com/ZRiRGKWU
Connection leak being detected: https://pastebin.com/XyEiUGUB

Configuration file ItemJoin: https://pastebin.com/9zGwa9R5

Please complete the following information:

• Resource Version and Build Number: v5.2.1-RELEASE-b678
• Server Version: Purpur 1.16.5 build 1090

Additional context
None.

Same issue as #369 already resolved.
Please use the latest snapshot;
https://ci.craftationgaming.com/job/ItemJoin/709/
Remember to remove your old ItemJoin.jar file

Oh, my apologies! I was unaware it had already been fixed. Thank you for the quick reply and have a nice day!