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Ticking block entity
net.minecraft.util.ReportedException: Ticking block entity at net.minecraft.server.MinecraftServer.func_71190_q(MinecraftServer.java:715)[MinecraftServer.class:?] at net.minecraft.server.dedicated.DedicatedServer.func_71190_q(DedicatedServer.java:387)[ld.class:?] at net.minecraft.server.MinecraftServer.func_71217_p(MinecraftServer.java:613)[MinecraftServer.class:?] at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:471)[MinecraftServer.class:?] at java.lang.Thread.run(Thread.java:745)[?:1.8.0_91]Caused by: java.lang.NullPointerException at slimeknights.tconstruct.library.tools.DualToolHarvestUtils.shouldUseOffhand(DualToolHarvestUtils.java:26)[DualToolHarvestUtils.class:?] at slimeknights.tconstruct.library.tools.TinkerToolCore.getHarvestLevel(TinkerToolCore.java:56)[TinkerToolCore.class:?] at net.minecraftforge.common.ForgeHooks.canToolHarvestBlock(ForgeHooks.java:187)[ForgeHooks.class:?] at com.vanhal.progressiveautomation.entities.miner.TileMiner.canMineBlock(TileMiner.java:131)[TileMiner.class:?] at com.vanhal.progressiveautomation.entities.miner.TileMiner.scanBlocks(TileMiner.java:90)[TileMiner.class:?] at com.vanhal.progressiveautomation.entities.miner.TileMiner.checkForChanges(TileMiner.java:428)[TileMiner.class:?] at com.vanhal.progressiveautomation.entities.miner.TileMiner.func_73660_a(TileMiner.java:67)[TileMiner.class:?] at net.minecraft.world.World.func_72939_s(World.java:1804)[aid.class:?] at net.minecraft.world.WorldServer.func_72939_s(WorldServer.java:619)[ls.class:?] at net.minecraft.server.MinecraftServer.func_71190_q(MinecraftServer.java:709)[MinecraftServer.class:?] ... 4 more