Using old Config

[Ryūgū Rena (竜宮 レナ)]

I updated my old 1.5.2 minecraft Server to 1.16.5, and this Happens:

14:16:51] [Server thread/WARN]: [War] Task #49 for War v2.0.0-RC6 generated an exception
java.lang.IllegalStateException: Unsupported volume format (was already converted to version: 0, current format: 3)
at com.tommytony.war.mapper.VolumeMapper.loadSimpleVolume(VolumeMapper.java:453) ~[?:?]
at com.tommytony.war.job.RestoreYmlWarhubJob.run(RestoreYmlWarhubJob.java:55) ~[?:?]
at org.bukkit.craftbukkit.v1_16_R3.scheduler.CraftTask.run(CraftTask.java:100) ~[patched_1.16.5.jar:git-Purpur-1171]
at org.bukkit.craftbukkit.v1_16_R3.scheduler.CraftScheduler.mainThreadHeartbeat(CraftScheduler.java:468) ~[patched_1.16.5.jar:git-Purpur-1171]
at net.minecraft.server.v1_16_R3.MinecraftServer.b(MinecraftServer.java:1503) ~[patched_1.16.5.jar:git-Purpur-1171]
at net.minecraft.server.v1_16_R3.DedicatedServer.b(DedicatedServer.java:449) ~[patched_1.16.5.jar:git-Purpur-1171]
at net.minecraft.server.v1_16_R3.MinecraftServer.a(MinecraftServer.java:1416) ~[patched_1.16.5.jar:git-Purpur-1171]
at net.minecraft.server.v1_16_R3.MinecraftServer.w(MinecraftServer.java:1142) ~[patched_1.16.5.jar:git-Purpur-1171]
at net.minecraft.server.v1_16_R3.MinecraftServer.lambda$a$0(MinecraftServer.java:293) ~[patched_1.16.5.jar:git-Purpur-1171]
at java.lang.Thread.run(Thread.java:833) [?:?]