当我添加将RealmObject扩展到我的项目的ChatInformation kotlin类时，无法建立项目，错误在哪里？
这是我的ChatInformation kotlin类：
open class ChatInformation( var Id: Int = 0, var TopicId: Int = 0, var CreateTime: String? = null, var StartTime: String? = null, var EndTime: String? = null, var StatusId: Int = 0, var Duration: String? = null, var TeacherId: String = "", var LearnerId: String = "", var SubjectName: String = "", var TopicTitle: String = "", var Class: Int = 0, var Learner: String = "", var Teacher: String = "", var TeacherReady: Boolean = false, var LearnerReady: Boolean = false ) : RealmObject() 如果我添加这个类，我得到以下错误：
Error:Execution failed for task ':app:compileDebugJavaWithJavac'.Compilation failed; see the compiler error output for details.
如果看到compliler这
Note: Processing class ChatLesson Note: Processing class CustomMessage Note: Processing class RequestListen Note: Creating DefaultRealmModule An exception has occurred in the compiler (1.8.0_152-release). Please file a bug against the Java compiler via the Java bug reporting page (http://bugreport.java.com) after checking the Bug Database (http://bugs.java.com) for duplicates. Include your program and the following diagnostic in your report. Thank you. java.lang.NullPointerException
与长的错误跟踪
如果我删除或评论ChatInformation类建立成功，哪里是错误？ 我已经尝试在领域3.5.0和3.7.1版本
我的错误是：我有一个
var类：Int = 0
字段在我的ChatInformation类，如果删除这个领域，它的作品不错