Fixed #6351

core/src/mindustry/io/JsonIO.java

@@ -228,7 +228,12 @@ public class JsonIO{
                 Item item = Vars.content.getByName(ContentType.item, str);
                 Liquid liquid = Vars.content.getByName(ContentType.liquid, str);
                 Block block = Vars.content.getByName(ContentType.block, str);
-                return item != null ? item : liquid == null ? block : liquid;
+                UnitType unit = Vars.content.getByName(ContentType.unit, str);
+                return
+                    item != null ? item :
+                    block != null ? block :
+                    liquid != null ? liquid :
+                    unit;
             }
         });
 

gradle.properties

@@ -24,4 +24,4 @@ android.useAndroidX=true
 #used for slow jitpack builds; TODO see if this actually works
 org.gradle.internal.http.socketTimeout=100000
 org.gradle.internal.http.connectionTimeout=100000
-archash=430f9146f3c9c34db1f9ad9a8784e71c322246f2
+archash=f106eee2