uniapp离线升级启动白屏

按照官网步骤集成的，对之前的5+sdk原生壳进行升级的。

社区上发的白屏注意事项都核对没问题，还是启动白屏，唯一的错误日志如下：

10-14 15:52:06.636 18084-18084/com.ccm.app W/System.err: java.lang.NullPointerException: Attempt to invoke
virtual method 'android.view.ViewTreeObserver android.view.View.getViewTreeObserver()' on a null object reference
at io.dcloud.common.core.ui.DCKeyboardManager.dhAppRootIsReady(DCKeyboardManager.java:117)
at io.dcloud.common.core.ui.c.a(DHAppRootView.java:1007)
10-14 15:52:06.637 18084-18084/com.ccm.app W/System.err:
at io.dcloud.common.core.ui.c$4.execute(DHAppRootView.java:934)
at io.dcloud.common.adapter.util.MessageHandler$1.handleMessage(MessageHandler.java:23)
at android.os.Handler.dispatchMessage(Handler.java:111)
at android.os.Looper.loop(Looper.java:207)
at android.app.ActivityThread.main(ActivityThread.java:5811)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:907)
10-14 15:52:06.638 18084-18084/com.ccm.app W/System.err:
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:768)
10-14 15:52:06.638 18084-18084/com.ccm.app E/DCloud_LOG:
MessageHandler.handleMessage e=java.lang.NullPointerException: Attempt to invoke virtual method 'android.view.ViewTreeObserver
android.view.View.getViewTreeObserver()' on a null object reference
10-14 15:52:06.656 18084-18194/com.ccm.app E/platform: NoSuchMethodException android.telephony.TelephonyManager getImei2