[13:35:09] [Server thread/WARN]: [HCF] Task #1491 for HCF v7.2 generated an exception
java.lang.StringIndexOutOfBoundsException: String index out of range: -1
at java.lang.String.substring(String.java:1967) ~[?:1.8.0_161]
at a.a.g.h.a.a(Unknown Source) ~[?:?]
at a.a.d.run(Unknown Source) ~[?:?]
at org.bukkit.craftbukkit.v1_7_R4.scheduler.CraftTask.run(CraftTask.java:71) ~[server.jar:git-PaperSpigot-ba75d9a]
at org.bukkit.craftbukkit.v1_7_R4.scheduler.CraftScheduler.mainThreadHeartbeat(CraftScheduler.java:350) [server.jar:git-PaperSpigot-ba75d9a]
at net.minecraft.server.v1_7_R4.MinecraftServer.v(MinecraftServer.java:700) [server.jar:git-PaperSpigot-ba75d9a]
at net.minecraft.server.v1_7_R4.DedicatedServer.v(DedicatedServer.java:310) [server.jar:git-PaperSpigot-ba75d9a]
at net.minecraft.server.v1_7_R4.MinecraftServer.u(MinecraftServer.java:642) [server.jar:git-PaperSpigot-ba75d9a]
at net.minecraft.server.v1_7_R4.MinecraftServer.run(MinecraftServer.java:548) [server.jar:git-PaperSpigot-ba75d9a]
at net.minecraft.server.v1_7_R4.ThreadServerApplication.run(SourceFile:628) [server.jar:git-PaperSpigot-ba75d9a]