what my server console had to say

`04.06 13:40:30 [Server] Server thread/FATAL Error executing task
04.06 13:40:30 [Server] INFO java.util.concurrent.ExecutionException: java.lang.NullPointerException
04.06 13:40:30 [Server] INFO at java.util.concurrent.FutureTask.report(FutureTask.java:122) ~[?:1.8.0_152]
04.06 13:40:30 [Server] INFO at java.util.concurrent.FutureTask.get(FutureTask.java:192) ~[?:1.8.0_152]
04.06 13:40:30 [Server] INFO at net.minecraft.util.Util.func_181617_a(SourceFile:47) [h.class:?]
04.06 13:40:30 [Server] INFO at net.minecraft.server.MinecraftServer.func_71190_q(MinecraftServer.java:723) [MinecraftServer.class:?]
04.06 13:40:30 [Server] INFO at net.minecraft.server.dedicated.DedicatedServer.func_71190_q(DedicatedServer.java:396) [nz.class:?]
04.06 13:40:30 [Server] INFO at net.minecraft.server.MinecraftServer.func_71217_p(MinecraftServer.java:668) [MinecraftServer.class:?]
04.06 13:40:30 [Server] INFO at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:526) [MinecraftServer.class:?]
04.06 13:40:30 [Server] INFO at java.lang.Thread.run(Thread.java:748) [?:1.8.0_152]
04.06 13:40:30 [Server] INFO Caused by: java.lang.NullPointerException
04.06 13:40:30 [Server] INFO at sonar.flux.common.tileentity.TileStorage.readData(TileStorage.java:157) ~[TileStorage.class:?]
04.06 13:40:30 [Server] INFO at sonar.core.common.block.SonarBlock.readDropStack(SonarBlock.java:179) ~[SonarBlock.class:?]
04.06 13:40:30 [Server] INFO at sonar.core.common.block.SonarBlock.func_180633_a(SonarBlock.java:61) ~[SonarBlock.class:?]
04.06 13:40:30 [Server] INFO at sonar.flux.common.block.FluxConnection.func_180633_a(FluxConnection.java:65) ~[FluxConnection.class:?]
04.06 13:40:30 [Server] INFO at net.minecraft.item.ItemBlock.placeBlockAt(ItemBlock.java:186) ~[ahb.class:?]
04.06 13:40:30 [Server] INFO at net.minecraft.item.ItemBlock.func_180614_a(ItemBlock.java:54) ~[ahb.class:?]
04.06 13:40:30 [Server] INFO at net.minecraftforge.common.ForgeHooks.onPlaceItemIntoWorld(ForgeHooks.java:875) ~[ForgeHooks.class:?]
04.06 13:40:30 [Server] INFO at net.minecraft.item.ItemStack.func_179546_a(ItemStack.java:186) ~[aip.class:?]
04.06 13:40:30 [Server] INFO at net.minecraft.server.management.PlayerInteractionManager.func_187251_a(PlayerInteractionManager.java:489) ~[or.class:?]
04.06 13:40:30 [Server] INFO at net.minecraft.network.NetHandlerPlayServer.func_184337_a(NetHandlerPlayServer.java:739) ~[pa.class:?]
04.06 13:40:30 [Server] INFO at net.minecraft.network.play.client.CPacketPlayerTryUseItemOnBlock.func_148833_a(SourceFile:55) ~[ma.class:?]
04.06 13:40:30 [Server] INFO at net.minecraft.network.play.client.CPacketPlayerTryUseItemOnBlock.func_148833_a(SourceFile:11) ~[ma.class:?]
04.06 13:40:30 [Server] INFO at net.minecraft.network.PacketThreadUtil$1.run(SourceFile:13) ~[hv$1.class:?]
04.06 13:40:30 [Server] INFO at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) ~[?:1.8.0_152]
04.06 13:40:30 [Server] INFO at java.util.concurrent.FutureTask.run(FutureTask.java:266) ~[?:1.8.0_152]
04.06 13:40:30 [Server] INFO at net.minecraft.util.Util.func_181617_a(SourceFile:46) ~[h.class:?]
04.06 13:40:30 [Server] INFO ... 5 more
04.06 13:40:49 [Disconnect] User justinboggs has disconnected, reason: Internal Exception: io.netty.channel.unix.Errors$NativeIoException: syscall:read(..) failed: Connection reset by peer
04.06 13:40:49 [Server] Server thread/INFO justinboggs left the game

`

Crash log

https://pastebin.com/aW7WBUSv

When coming back into the game the block says its invalid when I try to right click on it

Fixed in dev