Do not report this to paper please help me

[19:51:45 ERROR]: — DO NOT REPORT THIS TO PAPER - THIS IS NOT A BUG OR A CRASH - git-Paper-77 (MC: 1.15.2) —
[19:51:45 ERROR]: The server has not responded for 23 seconds! Creating thread dump
[19:51:45 ERROR]: ------------------------------
[19:51:45 ERROR]: Server thread dump (Look for plugins here before reporting to Paper!):
[19:51:45 ERROR]: ------------------------------
[19:51:45 ERROR]: Current Thread: Server thread
[19:51:45 ERROR]: PID: 20 | Suspended: false | Native: false | State: RUNNABLE
[19:51:45 ERROR]: Stack:
[19:51:45 ERROR]: com.google.common.collect.SingletonImmutableBiMap.get(SingletonImmutableBiMap.java:55)
[19:51:45 ERROR]: net.minecraft.server.v1_15_R1.BlockDataAbstract.get(BlockDataAbstract.java:88)
[19:51:45 ERROR]: net.minecraft.server.v1_15_R1.BlockFluids.a_(BlockFluids.java:45)
[19:51:45 ERROR]: net.minecraft.server.v1_15_R1.IBlockData.getFluid(IBlockData.java:271)
[19:51:45 ERROR]: net.minecraft.server.v1_15_R1.ItemWorldMap.a(ItemWorldMap.java:146)
[19:51:45 ERROR]: net.minecraft.server.v1_15_R1.ItemWorldMap.a(ItemWorldMap.java:329)
[19:51:45 ERROR]: net.minecraft.server.v1_15_R1.ItemStack.a(ItemStack.java:543)
[19:51:45 ERROR]: net.minecraft.server.v1_15_R1.PlayerInventory.j(PlayerInventory.java:287)
[19:51:45 ERROR]: net.minecraft.server.v1_15_R1.EntityHuman.movementTick(EntityHuman.java:426)
[19:51:45 ERROR]: net.minecraft.server.v1_15_R1.EntityLiving.tick(EntityLiving.java:2383)
[19:51:45 ERROR]: net.minecraft.server.v1_15_R1.EntityHuman.tick(EntityHuman.java:165)
[19:51:45 ERROR]: net.minecraft.server.v1_15_R1.EntityPlayer.playerTick(EntityPlayer.java:426)
[19:51:45 ERROR]: net.minecraft.server.v1_15_R1.PlayerConnection.tick(PlayerConnection.java:149)
[19:51:45 ERROR]: net.minecraft.server.v1_15_R1.NetworkManager.a(NetworkManager.java:260)
[19:51:45 ERROR]: net.minecraft.server.v1_15_R1.ServerConnection.c(ServerConnection.java:139)
[19:51:45 ERROR]: net.minecraft.server.v1_15_R1.MinecraftServer.b(MinecraftServer.java:1269)
[19:51:45 ERROR]: net.minecraft.server.v1_15_R1.DedicatedServer.b(DedicatedServer.java:423)
[19:51:45 ERROR]: net.minecraft.server.v1_15_R1.MinecraftServer.a(MinecraftServer.java:1112)
[19:51:45 ERROR]: net.minecraft.server.v1_15_R1.MinecraftServer.run(MinecraftServer.java:934)
[19:51:45 ERROR]: java.lang.Thread.run(Unknown Source)
[19:51:45 ERROR]: ------------------------------
[19:51:45 ERROR]: — DO NOT REPORT THIS TO PAPER - THIS IS NOT A BUG OR A CRASH —
[19:51:45 ERROR]: ------------------------------

It looks to be something is making the server ‘freeze’ for lack of a better word.

What (if any) plugins are you running?
Are you doing something specific before this is posted in console?