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java.lang.NullPointerException at[?:?] at[?:?] at[?:?] at$saveToDatabase$0([?:?] at[spigot-1.11.2.jar:git-Spigot-0b1090d-7fdc749] at[spigot-1.11.2.jar:git-Spigot-0b1090d-7fdc749] at java.util.concurrent.ThreadPoolExecutor.runWorker([?:1.8.0_121] at java.util.concurrent.ThreadPoolExecutor$[?:1.8.0_121] at[?:1.8.0_121]