Firebase ProGuard错误(警告)与库版本11.2.0

我正在开发11.0.4版本的firebase库。 今天,我已经切换到最新的:11.2.0,当我尝试构build发行版(与ProGuard上)我得到的错误:

Warning:com.google.android.gms.internal.zzbdo: can't find referenced method 'boolean isInstantApp(java.lang.String)' in library class android.content.pm.PackageManager Warning:there were 1 unresolved references to library class members. Warning:Exception while processing task java.io.IOException: Please correct the above warnings first. Error:Execution failed for task ':app:transformClassesAndResourcesWithProguardForRelease'. > Job failed, see logs for details 

和gradle控制台:

 Warning: there were 1 unresolved references to library class members. You probably need to update the library versions. (http://proguard.sourceforge.net/manual/troubleshooting.html#unresolvedlibraryclassmember) 

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