dynmap error

[07:29:01 ERROR]: [dynmap] Exception while fetching chunks:
java.lang.IndexOutOfBoundsException: fromIndex < 0: -6501517
at java.util.BitSet.checkRange(BitSet.java:362) ~[?:1.8.0_242]
at java.util.BitSet.set(BitSet.java:481) ~[?:1.8.0_242]
at net.minecraft.server.v1_15_R1.RegionFileBitSet.a(SourceFile:13) ~[patched_1.15.2.jar:git-Paper-375]
at net.minecraft.server.v1_15_R1.RegionFile.<init>(RegionFile.java:108) ~[patched_1.15.2.jar:git-Paper-375]
at net.minecraft.server.v1_15_R1.RegionFile.<init>(RegionFile.java:66) ~[patched_1.15.2.jar:git-Paper-375]
at net.minecraft.server.v1_15_R1.RegionFileCache.getFile(RegionFileCache.java:56) ~[patched_1.15.2.jar:git-Paper-375]
at net.minecraft.server.v1_15_R1.RegionFileCache.getFile(RegionFileCache.java:30) ~[patched_1.15.2.jar:git-Paper-375]
at net.minecraft.server.v1_15_R1.WorldServer$2.computeForRegionFile(WorldServer.java:158) ~[patched_1.15.2.jar:git-Paper-375]
at com.destroystokyo.paper.io.PaperFileIOThread.lambda$scheduleRead$5(PaperFileIOThread.java:345) ~[patched_1.15.2.jar:git-Paper-375]
at java.util.concurrent.ConcurrentHashMap.compute(ConcurrentHashMap.java:1853) ~[?:1.8.0_242]
at com.destroystokyo.paper.io.PaperFileIOThread.scheduleRead(PaperFileIOThread.java:341) ~[patched_1.15.2.jar:git-Paper-375]
at com.destroystokyo.paper.io.PaperFileIOThread.loadChunkDataAsync(PaperFileIOThread.java:309) ~[patched_1.15.2.jar:git-Paper-375]
at com.destroystokyo.paper.io.PaperFileIOThread.loadChunkDataAsyncFuture(PaperFileIOThread.java:243) ~[patched_1.15.2.jar:git-Paper-375]
at net.minecraft.server.v1_15_R1.PlayerChunkMap.read(PlayerChunkMap.java:1562) ~[patched_1.15.2.jar:git-Paper-375]
at org.dynmap.bukkit.helper.v115.MapChunkCache115.loadChunkNBT(MapChunkCache115.java:344) ~[?:?]
at org.dynmap.bukkit.helper.v115.MapChunkCache115.loadChunks(MapChunkCache115.java:435) ~[?:?]
at org.dynmap.bukkit.DynmapPlugin$BukkitServer$6.call(DynmapPlugin.java:490) ~[?:?]
at org.dynmap.bukkit.DynmapPlugin$BukkitServer$6.call(DynmapPlugin.java:477) ~[?:?]
at org.bukkit.craftbukkit.v1_15_R1.scheduler.CraftFuture.run(CraftFuture.java:88) ~[patched_1.15.2.jar:git-Paper-375]
at org.bukkit.craftbukkit.v1_15_R1.scheduler.CraftScheduler.mainThreadHeartbeat(CraftScheduler.java:468) ~[patched_1.15.2.jar:git-Paper-375]
at net.minecraft.server.v1_15_R1.MinecraftServer.run(MinecraftServer.java:917) ~[patched_1.15.2.jar:git-Paper-375]
at java.lang.Thread.run(Thread.java:748) [?:1.8.0_242]
[07:29:01 INFO]: Done (76.522s)! For help, type "help"