Hashset initialized

src/engine/ConfigParsing/EffectEntry/EffectEntry.java

@@ -6,7 +6,7 @@ public class EffectEntry {
     public String id;
     public String name;
     public int icon;
-    public HashSet<String> sources;
+    public HashSet<String> sources = new HashSet<>();
     public HashSet<String> mods;
     public HashSet<String> conditions;
 }