java.lang.ClassNotFoundException: kawa.standard.Scheme

i SOLVED my problem, as i said earlier i was copied and modified the component, then i only renamed which is visible component or component i gonna use for the block.

i was having a component named like example:
Label1_copy_copy_copy1_copy_copy_copy9_copy…,
Horizontal_Arrangement1_copy2_copy_copy1_copy1_copy_copy_copy…,
Space4_copy_copy_copy2_copy_copy2…, and so on.

Little did i know that it may cause the app not completely built as @Tony_Lange argument (discussable), so i rename all components i have on each screen to appropriate name and shorter name.

Voila!!! it works.
Lesson: don’t just use DRY (Don’t Repeat Yourself) on your block, but also on your components name.

Note: above is my stats using https://unchive.lodular.io, the way i do to my app may worked to you if you have smaller or bigger project.

i’m not sure if this the real solution, thus i would like to keep this topic open so that other who encounter similar issue can discuss here and wait for someone responsible to tell that long component name really affect the built apk.

Special Thanks to people reply on this topic before, appreciate it. @riadaska @Taifun