Invalid IP address literal when importing vanilla IP bans

[19:55:18 ERROR]: [space.arim.libertybans.core.service.StandardAsynchronicityManager] Error during asynchronous computation. Please report this bug either on Discord or Github.
java.util.concurrent.CompletionException: space.arim.libertybans.core.importing.ImportException: Unable to parse IP address 189.4.74.160:5286
        at java.base/java.util.concurrent.CompletableFuture.encodeThrowable(CompletableFuture.java:315) ~[?:?]
        at java.base/java.util.concurrent.CompletableFuture.completeThrowable(CompletableFuture.java:320) ~[?:?]
        at java.base/java.util.concurrent.CompletableFuture$AsyncSupply.run(CompletableFuture.java:1770) ~[?:?]
        at LibertyBans-ClassLoader/space.arim.managedwaits.SimpleTaskQueue.pollAndRunAll(SimpleTaskQueue.java:41) ~[LibertyBans-ClassLoader:?]
        at org.bukkit.craftbukkit.scheduler.CraftTask.run(CraftTask.java:78) ~[purpur-1.21.4.jar:1.21.4-2416-51aafbc]
        at org.bukkit.craftbukkit.scheduler.CraftScheduler.mainThreadHeartbeat(CraftScheduler.java:474) ~[purpur-1.21.4.jar:1.21.4-2416-51aafbc]
        at net.minecraft.server.MinecraftServer.tickChildren(MinecraftServer.java:1705) ~[purpur-1.21.4.jar:1.21.4-2416-51aafbc]
        at net.minecraft.server.MinecraftServer.tickServer(MinecraftServer.java:1575) ~[purpur-1.21.4.jar:1.21.4-2416-51aafbc]
        at net.minecraft.server.MinecraftServer.runServer(MinecraftServer.java:1291) ~[purpur-1.21.4.jar:1.21.4-2416-51aafbc]
        at net.minecraft.server.MinecraftServer.lambda$spin$2(MinecraftServer.java:313) ~[purpur-1.21.4.jar:1.21.4-2416-51aafbc]
        at java.base/java.lang.Thread.run(Thread.java:1583) ~[?:?]
Caused by: space.arim.libertybans.core.importing.ImportException: Unable to parse IP address 189.4.74.160:5286
        at LibertyBans-ClassLoader/space.arim.libertybans.env.spigot.BukkitImportSource.lambda$sourcePunishments$1(BukkitImportSource.java:67) ~[LibertyBans-ClassLoader:?]
        at LibertyBans-ClassLoader/space.arim.libertybans.env.spigot.BukkitImportSource.lambda$sourcePunishmentsMainThread$3(BukkitImportSource.java:97) ~[LibertyBans-ClassLoader:?]
        at java.base/java.util.stream.ReferencePipeline$3$1.accept(ReferencePipeline.java:197) ~[?:?]
        at java.base/java.util.Spliterators$ArraySpliterator.forEachRemaining(Spliterators.java:1024) ~[?:?]
        at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:509) ~[?:?]
        at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:499) ~[?:?]
        at java.base/java.util.stream.ReduceOps$ReduceOp.evaluateSequential(ReduceOps.java:921) ~[?:?]
        at java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234) ~[?:?]
        at java.base/java.util.stream.ReferencePipeline.collect(ReferencePipeline.java:682) ~[?:?]
        at LibertyBans-ClassLoader/space.arim.libertybans.env.spigot.BukkitImportSource.sourcePunishmentsMainThread(BukkitImportSource.java:100) ~[LibertyBans-ClassLoader:?]
        at LibertyBans-ClassLoader/space.arim.libertybans.env.spigot.BukkitImportSource.lambda$sourcePunishmentsFrom$2(BukkitImportSource.java:84) ~[LibertyBans-ClassLoader:?]
        at java.base/java.util.concurrent.CompletableFuture$AsyncSupply.run(CompletableFuture.java:1768) ~[?:?]
        ... 8 more
Caused by: java.net.UnknownHostException: 189.4.74.160:5286: invalid IPv6 address literal
        at java.base/java.net.InetAddress.invalidIPv6LiteralException(InetAddress.java:1693) ~[?:?]
        at java.base/java.net.InetAddress.getAllByName(InetAddress.java:1663) ~[?:?]
        at java.base/java.net.InetAddress.getByName(InetAddress.java:1568) ~[?:?]
        at LibertyBans-ClassLoader/space.arim.libertybans.env.spigot.BukkitImportSource.lambda$sourcePunishments$1(BukkitImportSource.java:65) ~[LibertyBans-ClassLoader:?]
        at LibertyBans-ClassLoader/space.arim.libertybans.env.spigot.BukkitImportSource.lambda$sourcePunishmentsMainThread$3(BukkitImportSource.java:97) ~[LibertyBans-ClassLoader:?]
        at java.base/java.util.stream.ReferencePipeline$3$1.accept(ReferencePipeline.java:197) ~[?:?]
        at java.base/java.util.Spliterators$ArraySpliterator.forEachRemaining(Spliterators.java:1024) ~[?:?]
        at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:509) ~[?:?]
        at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:499) ~[?:?]
        at java.base/java.util.stream.ReduceOps$ReduceOp.evaluateSequential(ReduceOps.java:921) ~[?:?]
        at java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234) ~[?:?]
        at java.base/java.util.stream.ReferencePipeline.collect(ReferencePipeline.java:682) ~[?:?]
        at LibertyBans-ClassLoader/space.arim.libertybans.env.spigot.BukkitImportSource.sourcePunishmentsMainThread(BukkitImportSource.java:100) ~[LibertyBans-ClassLoader:?]
        at LibertyBans-ClassLoader/space.arim.libertybans.env.spigot.BukkitImportSource.lambda$sourcePunishmentsFrom$2(BukkitImportSource.java:84) ~[LibertyBans-ClassLoader:?]
        at java.base/java.util.concurrent.CompletableFuture$AsyncSupply.run(CompletableFuture.java:1768) ~[?:?]
        ... 8 more