MethodHandle cannot be cracked when using LambdaMetafactory?

I want to convert a Record's constructor to a Function<Object[], T> using lambdametafactory (T is a generic type), here are my codes:

public record R(        String a,        String b) {}private static void testRecord() throws Throwable {    MethodHandles.Lookup lookup = MethodHandles.lookup();    MethodHandle constructor = lookup.findConstructor(R.class, MethodType.methodType(void.class, String.class, String.class));    constructor = constructor.asSpreader(Object[].class, 2);    R r = (R) constructor.invokeExact(new Object[]{"a", "b"});    System.out.println(r.a());    System.out.println(r.b());    MethodType methodType = constructor.type();    CallSite callSite = LambdaMetafactory.metafactory(lookup,"apply",            MethodType.methodType(Function.class),            methodType.erase(),            constructor,            methodType);    Function<Object[], R> f = (Function<Object[], R>) callSite.getTarget().invokeExact();    R apply = f.apply(new Object[]{"a", "b"});    System.out.println(apply.a());    System.out.println(apply.b());} 

When using constructor.invokeExact() method, the record could be instantiated successfully, but the CallSite couldn't be generated by LambdaMetafactory.metafactory() method because of following errors:

Exception in thread "main" java.lang.invoke.LambdaConversionException: MethodHandle(Object[])R is not direct or cannot be cracked    at java.base/java.lang.invoke.AbstractValidatingLambdaMetafactory.<init>(AbstractValidatingLambdaMetafactory.java:143)    at java.base/java.lang.invoke.InnerClassLambdaMetafactory.<init>(InnerClassLambdaMetafactory.java:168)    at java.base/java.lang.invoke.LambdaMetafactory.metafactory(LambdaMetafactory.java:336)

How can I fix this?