Minor My plugin called ItemMeta#setAttributeModifiers to set attribute modifiers, then the method threw NullPointerException
private Multimap<Attribute, AttributeModifier> attributeModifiers = HashMultimap.create(); // ................... meta.setAttributeModifiers(attributeModifiers);
The problem could be resolved temporarily by calling ItemMeta#addAttributeModifiers
attributeModifiers.forEach(meta::addAttributeModifier);
Stacktrace:
java.lang.NullPointerException: nulljava.lang.NullPointerException: null at org.bukkit.craftbukkit.v1_14_R1.inventory.CraftMetaItem.setAttributeModifiers(CraftMetaItem.java:1014) ~[spigot.jar:git-Spigot-e5b1b5d-803eaa3] at dev.anhcraft.abif.PreparedItem.build(PreparedItem.java:150) ~[?:?] at dev.anhcraft.abifplugin.Abifplugin.lambda$reload$2(Abifplugin.java:64) ~[?:?] at java.lang.Iterable.forEach(Iterable.java:75) ~[?:?] at dev.anhcraft.abifplugin.Abifplugin.reload(Abifplugin.java:64) ~[?:?] at dev.anhcraft.abifplugin.Abifplugin.onEnable(Abifplugin.java:23) ~[?:?] at org.bukkit.plugin.java.JavaPlugin.setEnabled(JavaPlugin.java:263) ~[spigot.jar:git-Spigot-e5b1b5d-803eaa3] at org.bukkit.plugin.java.JavaPluginLoader.enablePlugin(JavaPluginLoader.java:352) [spigot.jar:git-Spigot-e5b1b5d-803eaa3] at org.bukkit.plugin.SimplePluginManager.enablePlugin(SimplePluginManager.java:417) [spigot.jar:git-Spigot-e5b1b5d-803eaa3] at org.bukkit.craftbukkit.v1_14_R1.CraftServer.enablePlugin(CraftServer.java:461) [spigot.jar:git-Spigot-e5b1b5d-803eaa3] at org.bukkit.craftbukkit.v1_14_R1.CraftServer.enablePlugins(CraftServer.java:375) [spigot.jar:git-Spigot-e5b1b5d-803eaa3] at net.minecraft.server.v1_14_R1.MinecraftServer.a(MinecraftServer.java:449) [spigot.jar:git-Spigot-e5b1b5d-803eaa3] at net.minecraft.server.v1_14_R1.DedicatedServer.init(DedicatedServer.java:266) [spigot.jar:git-Spigot-e5b1b5d-803eaa3] at net.minecraft.server.v1_14_R1.MinecraftServer.run(MinecraftServer.java:775) [spigot.jar:git-Spigot-e5b1b5d-803eaa3]
I suppose this caused as #setAttributeModifiers() does not have #checkAttributeList()
