Advanced Machines Error

[21:55:02] [Server thread/ERROR]: Could not pass event InventoryClickEvent to PhoenixProject v1.1.5
org.bukkit.event.EventException: null
        at org.bukkit.plugin.java.JavaPluginLoader$1.execute(JavaPluginLoader.java:320) ~[spigot-1.14.4.jar:git-Spigot-9de398a-9c887d4]
        at org.bukkit.plugin.RegisteredListener.callEvent(RegisteredListener.java:70) ~[spigot-1.14.4.jar:git-Spigot-9de398a-9c887d4]
        at org.bukkit.plugin.SimplePluginManager.fireEvent(SimplePluginManager.java:529) ~[spigot-1.14.4.jar:git-Spigot-9de398a-9c887d4]
        at org.bukkit.plugin.SimplePluginManager.callEvent(SimplePluginManager.java:514) ~[spigot-1.14.4.jar:git-Spigot-9de398a-9c887d4]
        at net.minecraft.server.v1_14_R1.PlayerConnection.a(PlayerConnection.java:2133) ~[spigot-1.14.4.jar:git-Spigot-9de398a-9c887d4]
        at net.minecraft.server.v1_14_R1.PacketPlayInWindowClick.a(SourceFile:33) ~[spigot-1.14.4.jar:git-Spigot-9de398a-9c887d4]
        at net.minecraft.server.v1_14_R1.PacketPlayInWindowClick.a(SourceFile:10) ~[spigot-1.14.4.jar:git-Spigot-9de398a-9c887d4]
        at net.minecraft.server.v1_14_R1.PlayerConnectionUtils.lambda$0(PlayerConnectionUtils.java:19) ~[spigot-1.14.4.jar:git-Spigot-9de398a-9c887d4]
        at net.minecraft.server.v1_14_R1.TickTask.run(SourceFile:18) [spigot-1.14.4.jar:git-Spigot-9de398a-9c887d4]
        at net.minecraft.server.v1_14_R1.IAsyncTaskHandler.executeTask(SourceFile:144) [spigot-1.14.4.jar:git-Spigot-9de398a-9c887d4]
        at net.minecraft.server.v1_14_R1.IAsyncTaskHandlerReentrant.executeTask(SourceFile:23) [spigot-1.14.4.jar:git-Spigot-9de398a-9c887d4]
        at net.minecraft.server.v1_14_R1.IAsyncTaskHandler.executeNext(SourceFile:118) [spigot-1.14.4.jar:git-Spigot-9de398a-9c887d4]
        at net.minecraft.server.v1_14_R1.MinecraftServer.aX(MinecraftServer.java:910) [spigot-1.14.4.jar:git-Spigot-9de398a-9c887d4]
        at net.minecraft.server.v1_14_R1.MinecraftServer.executeNext(MinecraftServer.java:903) [spigot-1.14.4.jar:git-Spigot-9de398a-9c887d4]
        at net.minecraft.server.v1_14_R1.IAsyncTaskHandler.executeAll(SourceFile:103) [spigot-1.14.4.jar:git-Spigot-9de398a-9c887d4]
        at net.minecraft.server.v1_14_R1.MinecraftServer.sleepForTick(MinecraftServer.java:886) [spigot-1.14.4.jar:git-Spigot-9de398a-9c887d4]
        at net.minecraft.server.v1_14_R1.MinecraftServer.run(MinecraftServer.java:820) [spigot-1.14.4.jar:git-Spigot-9de398a-9c887d4]
        at java.lang.Thread.run(Unknown Source) [?:1.8.0_191]
Caused by: java.lang.NullPointerException
        at com.gestankbratwurst.advancedmachines.util.Eco.has(Eco.java:25) ~[?:?]
        at com.gestankbratwurst.advancedmachines.machines.upgradesystem.MachineUpgrade.checkMoney(MachineUpgrade.java:176) ~[?:?]
        at com.gestankbratwurst.advancedmachines.machines.upgradesystem.MachineUpgrade.getCostDesc(MachineUpgrade.java:140) ~[?:?]
        at com.gestankbratwurst.advancedmachines.machines.upgradesystem.MachineUpgrade.getIcon(MachineUpgrade.java:131) ~[?:?]
        at com.gestankbratwurst.advancedmachines.machines.upgradesystem.MachineUpgrade.getIcon(MachineUpgrade.java:102) ~[?:?]
        at com.gestankbratwurst.advancedmachines.machines.upgradesystem.UpgradeGUI.init(UpgradeGUI.java:38) ~[?:?]
        at net.crytec.phoenix.api.inventory.SmartInventory.open(SmartInventory.java:71) ~[?:?]
        at net.crytec.phoenix.api.inventory.SmartInventory.open(SmartInventory.java:44) ~[?:?]
        at net.crytec.phoenix.api.inventory.SmartInventory.open(SmartInventory.java:36) ~[?:?]
        at com.gestankbratwurst.advancedmachines.machines.upgradesystem.UpgradeGUI.open(UpgradeGUI.java:30) ~[?:?]
        at com.gestankbratwurst.advancedmachines.machines.Machine.lambda$2(Machine.java:114) ~[?:?]
        at net.crytec.phoenix.api.inventory.ClickableItem.run(ClickableItem.java:27) ~[?:?]
        at net.crytec.phoenix.api.inventory.SmartInvListener.lambda$onInventoryClick$2(SmartInvListener.java:70) ~[?:?]
        at java.util.Optional.ifPresent(Unknown Source) ~[?:1.8.0_191]
        at net.crytec.phoenix.api.inventory.SmartInvListener.onInventoryClick(SmartInvListener.java:70) ~[?:?]
        at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[?:1.8.0_191]
        at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source) ~[?:1.8.0_191]
        at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source) ~[?:1.8.0_191]
        at java.lang.reflect.Method.invoke(Unknown Source) ~[?:1.8.0_191]
        at org.bukkit.plugin.java.JavaPluginLoader$1.execute(JavaPluginLoader.java:316) ~[spigot-1.14.4.jar:git-Spigot-9de398a-9c887d4]
        ... 17 more