我在我的 android 应用程序中使用 klaxon（启用了 proguard） 这个错误来自最新的 android 版本 8.0。任何想法是什么原因造成的？
Fatal Exception: java.lang.RuntimeException
Unexpected character at position 2: '< (60)'
com.beust.klaxon.Parser.parse (Unknown Source:24)
cc.cc.api.JsonParser$Companion.parse (Unknown Source:15)
cc.cc.api.JsonParser$Companion$processResponse$1$2.onCompleted (Unknown Source:52)
com.koushikdutta.async.future.SimpleFuture.getResultOrThrow (Unknown Source:10)
com.koushikdutta.async.future.SimpleFuture.cancel (Unknown Source:22)
com.koushikdutta.ion.IonRequestBuilder$EmitterTransform$1.onCompleted (Unknown Source:25)
com.koushikdutta.async.future.SimpleFuture.getResultOrThrow (Unknown Source:10)
com.koushikdutta.async.future.SimpleFuture.cancel (Unknown Source:22)
com.koushikdutta.ion.IonRequestBuilder$1.run (Unknown Source:55)
com.koushikdutta.async.AsyncServer$RunnableWrapper.run (Unknown Source:14)
android.os.Handler.handleCallback (Handler.java:789)
android.os.Handler.dispatchMessage (Handler.java:98)
android.os.Looper.loop (Looper.java:164)
android.app.ActivityThread.main (ActivityThread.java:6541)
java.lang.reflect.Method.invoke (Method.java)
com.android.internal.os.Zygote$MethodAndArgsCaller.run (Zygote.java:240)
com.android.internal.os.ZygoteInit.main (ZygoteInit.java:767)