Android studio上提示错误如下：
03-13 14:09:30.647 29481-29481/com.gcsoft.vpnplugin W/System.err: java.lang.ClassNotFoundException: io.dcloud.feature.ui.UIFeatureImpl
03-13 14:09:30.647 29481-29481/com.gcsoft.vpnplugin W/System.err: at java.lang.Class.classForName(Native Method)
03-13 14:09:30.647 29481-29481/com.gcsoft.vpnplugin W/System.err: at java.lang.Class.forName(Class.java:324)
03-13 14:09:30.647 29481-29481/com.gcsoft.vpnplugin W/System.err: at java.lang.Class.forName(Class.java:285)
03-13 14:09:30.647 29481-29481/com.gcsoft.vpnplugin W/System.err: at io.dcloud.m.b.q(:27)
03-13 14:09:30.647 29481-29481/com.gcsoft.vpnplugin W/System.err: at io.dcloud.m.b.l(:118)
03-13 14:09:30.647 29481-29481/com.gcsoft.vpnplugin W/System.err: at io.dcloud.m.b.s(:3)
03-13 14:09:30.647 29481-29481/com.gcsoft.vpnplugin W/System.err: at io.dcloud.m.b.a(:144)
03-13 14:09:30.647 29481-29481/com.gcsoft.vpnplugin W/System.err: at io.dcloud.j.b.c.c(:22)
03-13 14:09:30.647 29481-29481/com.gcsoft.vpnplugin W/System.err: at io.dcloud.g.d.b.p.a(:2)
03-13 14:09:30.647 29481-29481/com.gcsoft.vpnplugin W/System.err: at io.dcloud.g.d.b.k.b(:10)
03-13 14:09:30.647 29481-29481/com.gcsoft.vpnplugin W/System.err: at io.dcloud.g.d.b.k$a.a(:5)
03-13 14:09:30.647 29481-29481/com.gcsoft.vpnplugin W/System.err: at io.dcloud.g.b.b.m$a.handleMessage(:3)
03-13 14:09:30.647 29481-29481/com.gcsoft.vpnplugin W/System.err: at android.os.Handler.dispatchMessage(Handler.java:102)
03-13 14:09:30.647 29481-29481/com.gcsoft.vpnplugin W/System.err: at android.os.Looper.loop(Looper.java:148)
03-13 14:09:30.647 29481-29481/com.gcsoft.vpnplugin W/System.err: at android.app.ActivityThread.main(ActivityThread.java:5619)
03-13 14:09:30.647 29481-29481/com.gcsoft.vpnplugin W/System.err: at java.lang.reflect.Method.invoke(Native Method)
03-13 14:09:30.647 29481-29481/com.gcsoft.vpnplugin W/System.err: at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:853)
03-13 14:09:30.647 29481-29481/com.gcsoft.vpnplugin W/System.err: at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:737)
03-13 14:09:30.647 29481-29481/com.gcsoft.vpnplugin W/System.err: Caused by: java.lang.ClassNotFoundException: Didn't find class "io.dcloud.feature.ui.UIFeatureImpl" on path: DexPathList[[zip file "/data/app/com.gcsoft.vpnplugin-2/base.apk"],nativeLibraryDirectories=[/data/app/com.gcsoft.vpnplugin-2/lib/arm, /data/app/com.gcsoft.vpnplugin-2/base.apk!/lib/armeabi-v7a, /vendor/lib, /system/lib]]
手机上提示如下：
当前环境无法运行启用“自定义组件模块”的uni-app应用
打包时未添加ui模块，......
请问是什么问题导致的。
