ERROR: can't start system unit afm-appli-asr--0.1--main@.service for uid 0

The current situation is that we wrote an app demo, but it prompts at runtime.

ERROR: can't start system unit afm-appli-asr-0.1-main@.service for uid 0 [/usr/src/debug/af-main/flounder+gitAUTOINC+73bd54bda0-r0/git/src/afm-urun.c:252]

I want to know what other dependencies are in addition to the config.xml file when we install the app.
I modified the config.xml file, but the actual installation icon is not displayed according to the icon in the package wgt, but I created an icon with the first letter of the application.
Is there any requirement for the format and size of the icon, can we install two identical icons in the system?