CSN Version: v1.3.3 (build 51)
Server base: git-Purpur-1586 (MC: 1.18.2)

[00:57:35 WARN]: @eventhandler method com.wfector.notifier.ChestShopNotifier#onChestShopTransaction returns non-void type boolean. This is unsupported behavior and will no longer work in a future version of Paper. This should be reported to the developers of ChestShopNotifier v1.3.3 (build 51) (BetaBlaze,Phoenix616,FrankHeijden)

Duplicate of #59 and already fixed. Please update to the latest dev builds.