Bukkit

I updated my 1.15.2 server to 1.16.5 today and am having frequent random errors in console, usually every 1-2 minutes. Because it's talking about a bound needing to be positive I thought maybe some Infernal Mob ended up somewhere they should be I used /im killall <world> on all my world but that did not fix it.

[00:30:14 WARN]: [InfernalMobs] Task #151896 for InfernalMobs v6.3 generated an exception
java.lang.IllegalArgumentException: bound must be positive
at java.util.Random.nextInt(Random.java:388) ~[?:1.8.0_275]
at io.hotmail.com.jacob_vejvoda.infernal_mobs.infernal_mobs.lambda$0(infernal_mobs.java:324) ~[?:?]
at org.bukkit.craftbukkit.v1_16_R3.scheduler.CraftTask.run(CraftTask.java:99) ~[patched_1.16.5.jar:git-Paper-445]
at org.bukkit.craftbukkit.v1_16_R3.scheduler.CraftScheduler.mainThreadHeartbeat(CraftScheduler.java:468) ~[patched_1.16.5.jar:git-Paper-445]
at net.minecraft.server.v1_16_R3.MinecraftServer.b(MinecraftServer.java:1293) ~[patched_1.16.5.jar:git-Paper-445]
at net.minecraft.server.v1_16_R3.DedicatedServer.b(DedicatedServer.java:377) ~[patched_1.16.5.jar:git-Paper-445]
at net.minecraft.server.v1_16_R3.MinecraftServer.a(MinecraftServer.java:1208) ~[patched_1.16.5.jar:git-Paper-445]
at net.minecraft.server.v1_16_R3.MinecraftServer.w(MinecraftServer.java:996) ~[patched_1.16.5.jar:git-Paper-445]
at net.minecraft.server.v1_16_R3.MinecraftServer.lambda$a$0(MinecraftServer.java:173) ~[patched_1.16.5.jar:git-Paper-445]
at java.lang.Thread.run(Thread.java:748) [?:1.8.0_275]
[00:30:28 INFO]: Ronaldo423 issued server command: /shop
[00:32:39 WARN]: [InfernalMobs] Task #160607 for InfernalMobs v6.3 generated an exception
java.lang.IllegalArgumentException: bound must be positive
at java.util.Random.nextInt(Random.java:388) ~[?:1.8.0_275]
at io.hotmail.com.jacob_vejvoda.infernal_mobs.infernal_mobs.lambda$0(infernal_mobs.java:324) ~[?:?]
at org.bukkit.craftbukkit.v1_16_R3.scheduler.CraftTask.run(CraftTask.java:99) ~[patched_1.16.5.jar:git-Paper-445]
at org.bukkit.craftbukkit.v1_16_R3.scheduler.CraftScheduler.mainThreadHeartbeat(CraftScheduler.java:468) ~[patched_1.16.5.jar:git-Paper-445]
at net.minecraft.server.v1_16_R3.MinecraftServer.b(MinecraftServer.java:1293) ~[patched_1.16.5.jar:git-Paper-445]
at net.minecraft.server.v1_16_R3.DedicatedServer.b(DedicatedServer.java:377) ~[patched_1.16.5.jar:git-Paper-445]
at net.minecraft.server.v1_16_R3.MinecraftServer.a(MinecraftServer.java:1208) ~[patched_1.16.5.jar:git-Paper-445]
at net.minecraft.server.v1_16_R3.MinecraftServer.w(MinecraftServer.java:996) ~[patched_1.16.5.jar:git-Paper-445]
at net.minecraft.server.v1_16_R3.MinecraftServer.lambda$a$0(MinecraftServer.java:173) ~[patched_1.16.5.jar:git-Paper-445]
at java.lang.Thread.run(Thread.java:748) [?:1.8.0_275]
[00:33:13 WARN]: [InfernalMobs] Task #162343 for InfernalMobs v6.3 generated an exception
java.lang.IllegalArgumentException: bound must be positive
at java.util.Random.nextInt(Random.java:388) ~[?:1.8.0_275]
at io.hotmail.com.jacob_vejvoda.infernal_mobs.infernal_mobs.lambda$0(infernal_mobs.java:324) ~[?:?]
at org.bukkit.craftbukkit.v1_16_R3.scheduler.CraftTask.run(CraftTask.java:99) ~[patched_1.16.5.jar:git-Paper-445]
at org.bukkit.craftbukkit.v1_16_R3.scheduler.CraftScheduler.mainThreadHeartbeat(CraftScheduler.java:468) ~[patched_1.16.5.jar:git-Paper-445]
at net.minecraft.server.v1_16_R3.MinecraftServer.b(MinecraftServer.java:1293) ~[patched_1.16.5.jar:git-Paper-445]
at net.minecraft.server.v1_16_R3.DedicatedServer.b(DedicatedServer.java:377) ~[patched_1.16.5.jar:git-Paper-445]
at net.minecraft.server.v1_16_R3.MinecraftServer.a(MinecraftServer.java:1208) ~[patched_1.16.5.jar:git-Paper-445]
at net.minecraft.server.v1_16_R3.MinecraftServer.w(MinecraftServer.java:996) ~[patched_1.16.5.jar:git-Paper-445]
at net.minecraft.server.v1_16_R3.MinecraftServer.lambda$a$0(MinecraftServer.java:173) ~[patched_1.16.5.jar:git-Paper-445]
at java.lang.Thread.run(Thread.java:748) [?:1.8.0_275]

it happens to me too, I had to remove the plugin until it solved...