[06:20:47 WARN]: [UpgradeableHoppers] Failed to save player cache.
[06:20:47 WARN]: java.io.FileNotFoundException: /home/ubuntu/minecraft/servers/survival/plugins/UpgradeableHoppers/Data/playercache.json (No such file or directory)
[06:20:47 WARN]:        at java.io.FileOutputStream.open0(Native Method)
[06:20:47 WARN]:        at java.io.FileOutputStream.open(FileOutputStream.java:270)
[06:20:47 WARN]:        at java.io.FileOutputStream.<init>(FileOutputStream.java:213)
[06:20:47 WARN]:        at java.io.FileOutputStream.<init>(FileOutputStream.java:101)
[06:20:47 WARN]:        at me.angeschossen.upgradeablehoppers.g.d.a.j(F:59)
[06:20:47 WARN]:        at me.angeschossen.upgradeablehoppers.g.l.b.run(F:39)
[06:20:47 WARN]:        at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
[06:20:47 WARN]:        at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308)
[06:20:47 WARN]:        at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180)
[06:20:47 WARN]:        at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294)
[06:20:47 WARN]:        at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
[06:20:47 WARN]:        at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
[06:20:47 WARN]:        at java.lang.Thread.run(Thread.java:748)