Crafting Poppy wobbler crashes game (Ender)

[demetharkey]

java.lang.NoSuchMethodError: 'java.util.Set haven.Utils.union(java.util.Set, java.util.Set)'
at haven.res.ui.tt.craftprep.CraftPrep.propagate(craftprep.cjava:46)
at haven.GItem.addcontinfo(GItem.java:457)
at haven.GItem.info(GItem.java:331)
at haven.WItem.info(WItem.java:142)
at haven.ItemInfo$AttrCache.get(ItemInfo.java:691)
at haven.ItemInfo$AttrCache.get(ItemInfo.java:686)
at haven.WItem.draw(WItem.java:269)
at haven.Widget.draw(Widget.java:818)
at haven.Widget.draw(Widget.java:824)
at haven.Inventory.draw(Inventory.java:108)
at haven.Widget.draw(Widget.java:818)
at haven.Widget.draw(Widget.java:824)
at haven.Widget.draw(Widget.java:818)
at haven.Widget.draw(Widget.java:824)
at haven.Window.drawbuf(Window.java:432)
at haven.Window.draw(Window.java:446)
at haven.Widget.draw(Widget.java:818)
at haven.Widget.draw(Widget.java:824)
at haven.GameUI.draw(GameUI.java:1381)
at haven.Widget.draw(Widget.java:818)
at haven.Widget.draw(Widget.java:824)
at haven.RootWidget.draw(RootWidget.java:90)
at haven.UI.draw(UI.java:427)
at haven.GLPanel$Loop.display(GLPanel.java:306)
at haven.GLPanel$Loop.run(GLPanel.java:398)
at haven.JOGLPanel.run(JOGLPanel.java:246)
at java.base/java.lang.Thread.run(Unknown Source)

[Frogg]

Omg Jorb and Lobster fix ***YOUR*** client.