我刚刚在Play商店中发布了我们应用的新版本，突然发现了很多java.lang.NoClassDefFoundError异常。它们似乎仅适用于Android9。这是堆栈跟踪..有什么想法吗？
我似乎无法在调试器中复制它。
java.lang.RuntimeException:
at android.os.AsyncTask$3.done (AsyncTask.java:354)
at java.util.concurrent.FutureTask.finishCompletion (FutureTask.java:383)
at java.util.concurrent.FutureTask.setException (FutureTask.java:252)
at java.util.concurrent.FutureTask.run (FutureTask.java:271)
at android.os.AsyncTask$SerialExecutor$1.run (AsyncTask.java:245)
at java.util.concurrent.ThreadPoolExecutor.runWorker (ThreadPoolExecutor.java:1167)
at java.util.concurrent.ThreadPoolExecutor$Worker.run (ThreadPoolExecutor.java:641)
at java.lang.Thread.run (Thread.java:764)
Caused by: java.lang.NoClassDefFoundError:
at com.concept2.ergdata.Sync2.getUser (Sync2.java:304)
at com.concept2.ergdata.Sync2.synchronize (Sync2.java:76)
at com.concept2.ergdata.ErgData$synchronize.doInBackground (ErgData.java:2284)
at com.concept2.ergdata.ErgData$synchronize.doInBackground (ErgData.java:2281)
at android.os.AsyncTask$2.call (AsyncTask.java:333)
at java.util.concurrent.FutureTask.run (FutureTask.java:266)
Caused by: java.lang.ClassNotFoundException:
at dalvik.system.BaseDexClassLoader.findClass (BaseDexClassLoader.java:169)
at java.lang.ClassLoader.loadClass (ClassLoader.java:379)
at java.lang.ClassLoader.loadClass (ClassLoader.java:312)