I just tried setting up a new app with Crashlytics following the docs here: https://rnfirebase.io/crashlytics/usage
That went fine, but once I did the Android specific setup (https://rnfirebase.io/crashlytics/android-setup), my app would not compile. Here is the relevant error:
FAILURE: Build failed with an exception. * What went wrong: A problem occurred configuring root project 'nicola'. > Could not resolve all artifacts for configuration ':classpath'. > Could not resolve io.fabric.tools:gradle:1.28.1. Required by: project : > Could not resolve io.fabric.tools:gradle:1.28.1. > Could not get resource 'https://maven.fabric.io/public/io/fabric/tools/gradle/1.28.1/gradle-1.28.1.pom'. > Could not GET 'https://maven.fabric.io/public/io/fabric/tools/gradle/1.28.1/gradle-1.28.1.pom'. > Connect to maven.fabric.io:443 [maven.fabric.io/0.0.0.0, maven.fabric.io/0:0:0:0:0:0:0:0] failed: Connection refused (Connection refused)
I guess Google shut down the old fabric.io servers sooner than people expected. I did not get around to doing the iOS specific setup, but looking at the official Firebase docs, I’m guessing those are outdated too.