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java.lang.NullPointerException: Ticking block entity	at mekanism.generators.common.tile.reactor.TileEntityReactorPort.drawGas(TileEntityReactorPort.java:205)	at mekanism.common.multipart.PartPressurizedTube.func_73660_a(PartPressurizedTube.java:61)	at mcmultipart.block.TileMultipartContainer$Ticking.func_73660_a(TileMultipartContainer.java:311)