E/platform: ClassNotFoundException io.dcloud.feature.x5.X5InitImp

1. 新建了一个uni-app项目，参考文档： https://nativesupport.dcloud.net.cn/AppDocs/usesdk/android
2. 打包配置到 android studio 运行 app,报错如下:

04-27 10:59:28.443 2384-2384/? I/art: Late-enabling -Xcheck:jni  
04-27 10:59:28.443 2384-2384/? D/libnativebridge: call UnloadNativeBridge! state=1  
04-27 10:59:28.523 2384-2384/com.example.myapplication E/doForFeature: AdFeatureImpl onAppAttachBaseContext  
04-27 10:59:28.526 2384-2384/com.example.myapplication E/platform: ClassNotFoundException io.dcloud.feature.x5.X5InitImpl init  
04-27 10:59:28.528 2384-2384/com.example.myapplication E/platform: ClassNotFoundException io.dcloud.feature.weex.WeexDevtoolImpl registerReloadReceiver  
04-27 10:59:28.529 2384-2384/com.example.myapplication E/DCloud_LOG: PlatformUtil.getResInputStream RuntimeException pFilePath=data/dcloud_control.xml  
04-27 10:59:28.540 2384-2384/com.example.myapplication E/platform: ClassNotFoundException io.dcloud.feature.weex.WeexDevtoolImpl initDebugEnvironment  
04-27 10:59:28.543 2384-2384/com.example.myapplication D/SoLoader: init start  
04-27 10:59:28.543 2384-2384/com.example.myapplication D/SoLoader: adding system library source: /vendor/lib  
04-27 10:59:28.543 2384-2384/com.example.myapplication D/SoLoader: adding system library source: /system/lib

请问是哪个环节出了问题，该如何排查呢？