I want to try the new Firebase App Distribution feature, but the moment I drag my apk to upload it and create a new distribution, I get this error: "Something went wrong. 'app-release.apk' failed to upload."
As the documentation says (https://firebase.google.com/docs/app-distribution/android/distribute-console), I'm following my normal build process and signing the apk. I've tried signin it with my app signin key, with the debug key, with V1 signature, V2 signature, and with both V1 and V2.