Could not resolve com.facebook.android:facebook-android-sdk:5.+

[slasktotten]

For some reason making Android builds just stopped working.
Here's the gradle output:

> Task :clean
> Task :preBuild UP-TO-DATE
> Task :preReleaseBuild UP-TO-DATE
> Task :writeReleaseApplicationId
> Task :analyticsRecordingRelease
> Task :compileReleaseRenderscript NO-SOURCE
> Task :generateReleaseResValues
> Task :generateReleaseResources
> Task :mergeReleaseResources FAILED

FAILURE: Build failed with an exception.

* What went wrong:
Execution failed for task ':mergeReleaseResources'.
> Could not resolve all files for configuration ':releaseRuntimeClasspath'.
   > Could not resolve com.gameanalytics.sdk:gameanalytics-android:5.4.4.
     Required by:
         project :
      > Skipped due to earlier error
      > Could not resolve com.gameanalytics.sdk:gameanalytics-android:5.4.4.
         > Could not get resource 'https://applovin.bintray.com/Android-Adapter-SDKs/com/gameanalytics/sdk/gameanalytics-android/5.4.4/gameanalytics-android-5.4.4.pom'.
            > Could not GET 'https://applovin.bintray.com/Android-Adapter-SDKs/com/gameanalytics/sdk/gameanalytics-android/5.4.4/gameanalytics-android-5.4.4.pom'. Received status code 502 from server: Bad Gateway
   > Could not resolve com.facebook.android:facebook-android-sdk:5.+.
     Required by:
         project :
      > Failed to list versions for com.facebook.android:facebook-android-sdk.
         > Unable to load Maven meta-data from https://dl.bintray.com/mobilap/maven/com/facebook/android/facebook-android-sdk/maven-metadata.xml.
            > Could not get resource 'https://dl.bintray.com/mobilap/maven/com/facebook/android/facebook-android-sdk/maven-metadata.xml'.
               > Could not GET 'https://dl.bintray.com/mobilap/maven/com/facebook/android/facebook-android-sdk/maven-metadata.xml'. Received status code 502 from server: Bad Gateway

* Try:
Run with --stacktrace option to get the stack trace. Run with --info or --debug option to get more log output. Run with --scan to get full insights.

* Get more help at https://help.gradle.org

BUILD FAILED in 15s
5 actionable tasks: 5 executed

Exit Code: 1