Error de compilación

Buen día, al tratar de compilar mi proyecto me aparece este error:

App Inventor no ha podido compilar el proyecto.
El error de compilación es
________Preparing application icon
________Creating animation xml
________Creating style xml
________Creating provider_path xml
________Creating network_security_config xml
________Generating adaptive icon file
________Generating round adaptive icon file
________Generating adaptive icon background file
________Generating manifest file
________Attaching native libraries
________Attaching Android Archive (AAR) libraries
________Attaching component assets
________Invoking AAPT
AAPT time: 1.007 seconds
________Compiling source files
(compiling appinventor/ai_insucarl/RTA/Screen1.yail to appinventor.ai_insucarl.RTA.Screen1)
(compiling /tmp/runtime8442570147866654509.scm to com.google.youngandroid.runtime)
Kawa compile time: 5.828 seconds
________Invoking DX
YAIL compiler - DX execution failed.

que debo hacer? gracias