无法通过使用gson.toJson(元素)获取JSON字符串，{模块java.base不会将java.util”打开”到模块com.google.gson]

我正在开发一个minecraft-forge模块，它可以从游戏中收集数据，并将所有数据转换为JSON字符串。这个模块工作正常，而我的类只有这些字段：

public class MyInfo {

    public int ID;
    public float Health;
    public double X;
    public double Y;
    public double Z;

    public MyInfo(Player play) {
        ID = play.getId();
        Health = play.getHealth();
        X = play.getX();
        Y = play.getY();
        Z = play.getZ();
    }

Player是net.minecraft.world.entity.player.Player的一个示例，我可以在其中检索一些所需的数据。
它工作得很好，我制作JSON字符串的那一行没有遇到任何问题。

Gson _Json = new GsonBuilder().setPrettyPrinting().create();
MyInfo pers = new MyInfo(player);
String Data = _Json.toJson(pers);

问题：

只要我在MyInfo类中添加了一个ArrayList字段，就像我现在要展示的那样：

public class MyInfo {

    public int ID;
    public float Health;
    public double X;
    public double Y;
    public double Z;
    public ArrayList<MobEffectInstance> ActivePotionEffects;

    public MyInfo(Player play) {
        ID = play.getId();
        Health = play.getHealth();
        X = play.getX();
        Y = play.getY();
        Z = play.getZ();
        ActivePotionEffects = new ArrayList<>(play.getActiveEffects()); //the method .getActiveEffects returns a Collection<MobEffectIstance>
    }

线程一到达我使用_Json.toJson(pers)的行就遇到一个异常，该异常表示：

Exception in thread "Thread-6" java.lang.reflect.InaccessibleObjectException: 
Unable to make field private final java.util.concurrent.atomic.AtomicLong java.util.Random.seed accessible: module java.base does not "opens java.util" to module com.google.gson
at java.base/java.lang.reflect.AccessibleObject.checkCanSetAccessible(AccessibleObject.java:354)
at java.base/java.lang.reflect.AccessibleObject.checkCanSetAccessible(AccessibleObject.java:297)
at java.base/java.lang.reflect.Field.checkCanSetAccessible(Field.java:178)
at java.base/java.lang.reflect.Field.setAccessible(Field.java:172)
at MC-BOOTSTRAP/com.google.gson@2.8.9/com.google.gson.internal.reflect.UnsafeReflectionAccessor.makeAccessible(UnsafeReflectionAccessor.java:44)
at MC-BOOTSTRAP/com.google.gson@2.8.9/com.google.gson.internal.bind.ReflectiveTypeAdapterFactory.getBoundFields(ReflectiveTypeAdapterFactory.java:159)
at MC-BOOTSTRAP/com.google.gson@2.8.9/com.google.gson.internal.bind.ReflectiveTypeAdapterFactory.create(ReflectiveTypeAdapterFactory.java:102)        
at MC-BOOTSTRAP/com.google.gson@2.8.9/com.google.gson.Gson.getAdapter(Gson.java:489)
at MC-BOOTSTRAP/com.google.gson@2.8.9/com.google.gson.internal.bind.ReflectiveTypeAdapterFactory.createBoundField(ReflectiveTypeAdapterFactory.java:117)
at MC-BOOTSTRAP/com.google.gson@2.8.9/com.google.gson.internal.bind.ReflectiveTypeAdapterFactory.getBoundFields(ReflectiveTypeAdapterFactory.java:166)
at MC-BOOTSTRAP/com.google.gson@2.8.9/com.google.gson.internal.bind.ReflectiveTypeAdapterFactory.create(ReflectiveTypeAdapterFactory.java:102)        
at MC-BOOTSTRAP/com.google.gson@2.8.9/com.google.gson.Gson.getAdapter(Gson.java:489)
at MC-BOOTSTRAP/com.google.gson@2.8.9/com.google.gson.internal.bind.CollectionTypeAdapterFactory.create(CollectionTypeAdapterFactory.java:53) 
at MC-BOOTSTRAP/com.google.gson@2.8.9/com.google.gson.Gson.getAdapter(Gson.java:489)
at MC-BOOTSTRAP/com.google.gson@2.8.9/com.google.gson.internal.bind.ReflectiveTypeAdapterFactory.createBoundField(ReflectiveTypeAdapterFactory.java:117)
at MC-BOOTSTRAP/com.google.gson@2.8.9/com.google.gson.internal.bind.ReflectiveTypeAdapterFactory.getBoundFields(ReflectiveTypeAdapterFactory.java:166)
at MC-BOOTSTRAP/com.google.gson@2.8.9/com.google.gson.internal.bind.ReflectiveTypeAdapterFactory.create(ReflectiveTypeAdapterFactory.java:102)        
at MC-BOOTSTRAP/com.google.gson@2.8.9/com.google.gson.Gson.getAdapter(Gson.java:489)
at MC-BOOTSTRAP/com.google.gson@2.8.9/com.google.gson.internal.bind.ReflectiveTypeAdapterFactory.createBoundField(ReflectiveTypeAdapterFactory.java:117)
at MC-BOOTSTRAP/com.google.gson@2.8.9/com.google.gson.internal.bind.ReflectiveTypeAdapterFactory.getBoundFields(ReflectiveTypeAdapterFactory.java:166)
at MC-BOOTSTRAP/com.google.gson@2.8.9/com.google.gson.internal.bind.ReflectiveTypeAdapterFactory.create(ReflectiveTypeAdapterFactory.java:102)        
at MC-BOOTSTRAP/com.google.gson@2.8.9/com.google.gson.Gson.getAdapter(Gson.java:489)
at MC-BOOTSTRAP/com.google.gson@2.8.9/com.google.gson.internal.bind.ReflectiveTypeAdapterFactory.createBoundField(ReflectiveTypeAdapterFactory.java:117)
at MC-BOOTSTRAP/com.google.gson@2.8.9/com.google.gson.internal.bind.ReflectiveTypeAdapterFactory.getBoundFields(ReflectiveTypeAdapterFactory.java:166)
at MC-BOOTSTRAP/com.google.gson@2.8.9/com.google.gson.internal.bind.ReflectiveTypeAdapterFactory.create(ReflectiveTypeAdapterFactory.java:102)        
at MC-BOOTSTRAP/com.google.gson@2.8.9/com.google.gson.Gson.getAdapter(Gson.java:489)
at MC-BOOTSTRAP/com.google.gson@2.8.9/com.google.gson.internal.bind.CollectionTypeAdapterFactory.create(CollectionTypeAdapterFactory.java:53) 
at MC-BOOTSTRAP/com.google.gson@2.8.9/com.google.gson.Gson.getAdapter(Gson.java:489)
at MC-BOOTSTRAP/com.google.gson@2.8.9/com.google.gson.internal.bind.ReflectiveTypeAdapterFactory.createBoundField(ReflectiveTypeAdapterFactory.java:117)
at MC-BOOTSTRAP/com.google.gson@2.8.9/com.google.gson.internal.bind.ReflectiveTypeAdapterFactory.getBoundFields(ReflectiveTypeAdapterFactory.java:166)
at MC-BOOTSTRAP/com.google.gson@2.8.9/com.google.gson.internal.bind.ReflectiveTypeAdapterFactory.create(ReflectiveTypeAdapterFactory.java:102)        
at MC-BOOTSTRAP/com.google.gson@2.8.9/com.google.gson.Gson.getAdapter(Gson.java:489)
at MC-BOOTSTRAP/com.google.gson@2.8.9/com.google.gson.Gson.getAdapter(Gson.java:489)
at MC-BOOTSTRAP/com.google.gson@2.8.9/com.google.gson.internal.bind.ReflectiveTypeAdapterFactory.createBoundField(ReflectiveTypeAdapterFactory.java:117)
at MC-BOOTSTRAP/com.google.gson@2.8.9/com.google.gson.internal.bind.ReflectiveTypeAdapterFactory.getBoundFields(ReflectiveTypeAdapterFactory.java:166)
at MC-BOOTSTRAP/com.google.gson@2.8.9/com.google.gson.internal.bind.ReflectiveTypeAdapterFactory.create(ReflectiveTypeAdapterFactory.java:102)        
at MC-BOOTSTRAP/com.google.gson@2.8.9/com.google.gson.Gson.getAdapter(Gson.java:489)
at MC-BOOTSTRAP/com.google.gson@2.8.9/com.google.gson.Gson.toJson(Gson.java:727)
at MC-BOOTSTRAP/com.google.gson@2.8.9/com.google.gson.Gson.toJsonTree(Gson.java:628)
at MC-BOOTSTRAP/com.google.gson@2.8.9/com.google.gson.Gson.toJsonTree(Gson.java:607)

如果我在示例化_Json的同一个类中示例化一个ArrayList<Integer>，并通过FOR循环填充它，然后使用toJson()，则不会出现访问java.lang以获得Gson的问题
即：

ArrayList<Integer> numbers = new ArrayList<>();
for (int i = 0; i < 10; i++) {
       numbers.add(i);
}
Gson _Json = new GsonBuilder().setPrettyPrinting().create();
MyInfo playr = new MyInfo(player); 
String Data = _Json.toJson(numbers); //<-- not passing *playr* anymore, but *numbers*

编辑：

我找到了一个变通方法，它主要是为我的目的工作的，是有类型MobEffectInstance分解为基本数据类型（即String或Integer），并把这些值在集合中

public class MyInfo {

    public int ID;
    public float Health;
    public double X;
    public double Y;
    public double Z;
    public HashMap<String,Integer> ActivePotionEffects;

    public MyInfo(Player play) {
        ID = play.getId();
        Health = play.getHealth();
        X = play.getX();
        Y = play.getY();
        Z = play.getZ();
        ActivePotionEffects = new HashMap<>();
        ArrayList<MobEffectInstance> Temp = new ArrayList<>(play.getActiveEffects());
        for (MobEffectInstance mobEffectInstance : Temp) {
            ActivePotionEffects.put(mobEffectInstance.getDescriptionId(), mobEffectInstance.getDuration());
        }
    }

无法通过使用gson.toJson(元素)获取JSON字符串，{模块java.base不会将java.util”打开”到模块com.google.gson]

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