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java.lang.NullPointerException: 	at com.github.igotyou.FactoryMod.recipes.PylonRecipe.getOutputRepresentation(PylonRecipe.java:62)	at com.github.igotyou.FactoryMod.recipes.Upgraderecipe.getRecipeRepresentation(Upgraderecipe.java:46)	at com.github.igotyou.FactoryMod.utility.MenuBuilder.openRecipeBrowser(MenuBuilder.java:195)	at com.github.igotyou.FactoryMod.utility.MenuBuilder.access$200(MenuBuilder.java:41)	at com.github.igotyou.FactoryMod.utility.MenuBuilder$2.clicked(MenuBuilder.java:149)	at vg.civcraft.mc.civmodcore.inventorygui.ClickableInventory.itemClick(ClickableInventory.java:138)	at vg.civcraft.mc.civmodcore.inventorygui.ClickableInventoryListener.inventoryClick(ClickableInventoryListener.java:28)	at sun.reflect.GeneratedMethodAccessor178.invoke(Unknown Source)	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)	at java.lang.reflect.Method.invoke(Method.java:498)	at org.bukkit.plugin.java.JavaPluginLoader$1.execute(JavaPluginLoader.java:306)