FYI: This is new for me as well… now happening with onesignal 3.0.0 and 3.0.1
Also, if you look at my build logs it appears everything built just fine, but Volt still rejects it due to this error. According to a forum post I found online, this is not a game stopper error and can be safely ignored.
https://github.com/OneSignal/OneSignal-Cordova-SDK/issues/709 <–scroll way to the bottom
Additional note: I can confirm this same “error” is produced with my local builds (my own build enviroment). However, the app indeeds builds just fine and onesignal works perfectly.
Volt: Anyway the Volt android build system can be modified to ignore this error so we can successfully build/publish android? Especially if the build is successful (see below)
Another update: Odd thing is Volt built my app just fine about 3 days ago. Trying to target same Onesignal, cordova, sdk, etc versions.
BUILD SUCCESSFUL in 30s
55 actionable tasks: 55 executed
Built the following bundle(s):
Error ‘Plugin-Version’ of ‘unspecified’ for ‘com.android.build.gradle.AppPlugin@1bc85003’ is not a valid version number
You most likely have an out of date plugin or a plugin conflict.
Build 9127d15b-f630-4ee2-a8ea-70519427312a failed