Try adding this line:

maven { url 'https://maven.scijava.org/content/repositories/public' }

before this line:

maven { url 'https://jitpack.io' }

At build.gradle (e.g. "C:\Program Files (x86)\GeneXus\GeneXus18\Android\Templates\RootProject\build.gradle")

Reference: https://www.genexus.com/en/developers/websac?data=60721;;