You can look through that file and see the generated manifest. Notice this from the output:
repositories { jcenter() mavenCentral() jcenter() maven { url 'https://jitpack.io' } mavenLocal() mavenCentral() google() flatDir{ dirs 'libs' } } Most of the repos there are already present so you only need to add some of them. The actual error is: /tmp/build4457111464099468165xxx/MainClass/build/intermediates/manifests/full/release/AndroidManifest.xml:42: AAPT: No resource identifier found for attribute 'appComponentFactory' in package 'android' /tmp/build4457111464099468165xxx/MainClass/build/intermediates/manifests/full/release/AndroidManifest.xml:42: error: No resource identifier found for attribute 'appComponentFactory' in package 'android' I'm not sure what triggered these failures. I was able to find this while googling that specific error and it included some suggestions: https://stackoverflow.com/questions/50266035/no-resource-identifier-found-for-attribute-appcomponentfactory-in-package-and/51170620 (Notice that these sort of things are fragile as Androids build system/supporting libraries are "dependency hell") Try adding the build hint: android.supportv4Dep=compile 'com.android.support:support-v4:27.1'; implementation 'com.android.support:appcompat-v7:27.1'; This should match the suggestion of the first answer there. It isn't ideal as you might fail again when we need to move to API level 28/29 as required by google. -- You received this message because you are subscribed to the Google Groups "CodenameOne Discussions" group. To unsubscribe from this group and stop receiving emails from it, send an email to codenameone-discussions+unsubscr...@googlegroups.com. Visit this group at https://groups.google.com/group/codenameone-discussions. To view this discussion on the web visit https://groups.google.com/d/msgid/codenameone-discussions/f3e8a587-3098-460c-9542-22b7150065da%40googlegroups.com. For more options, visit https://groups.google.com/d/optout.