Modpack wont load after pressing launch

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PJ_Skyrix

New Member
Mar 25, 2021
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Hi guys i got this problem. Can someone help me ?
2021-03-25 12:04:09 [SEVERE] [ForgeModLoader] Unable to launch
java.util.ConcurrentModificationException
at java.util.ArrayList$Itr.checkForComodification(Unknown Source)
at java.util.ArrayList$Itr.remove(Unknown Source)
at net.minecraft.launchwrapper.Launch.launch(Launch.java:114)
at net.minecraft.launchwrapper.Launch.main(Launch.java:27)
MC process exited. return value: 0

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Quetzi

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