java.lang.IndexOutOfBoundsException at java.util.ArrayList.RangeCheck(ArrayList.java:547)

I got hacked by a server called mc.synapsehlp.com, the person who hacked me was kammy he donated to the server. He threatened to hack me he was 15. so I said i would stop and he frieked out. Then it happened and it said "hi Kammy this is awkward".

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