Update to 1.21.11

src/main/java/com/alttd/playershops/shop/PlayerShop.java

@@ -179,7 +179,7 @@ public class PlayerShop {
                         Placeholder.component("itemname", ShopUtil.trimmedItemNameComponent(getItemStack()))
                 );
                 for (int i = 0; i < 4; i++) {
-                    signBlock.line(i, miniMessage.deserialize(signLines.get(i), tagResolver));
+                    signBlock.getSide(Side.FRONT).line(i, miniMessage.deserialize(signLines.get(i), tagResolver));
                 }
                 signBlock.update(true);
             }