我将最新的Firebase SDK Messaging软件包添加到我已经运行良好的GPGS的项目中。首先，有可能构建应用程序似乎没有涉及任何问题，但我发现GPGS停止运行，在初始化期间给我异常。
因此我重新安装了它。我尝试使用Play服务解析器强制解决问题，最终导致更致命的问题。
解析器给我这个错误：
Resolution failed
Failed to fetch the following dependencies:
com.google.android.gms:play-services-ads-identifier:17.0.0
com.google.android.gms:play-services-auth-api-phone-license:17.0.0
com.google.android.gms:play-services-auth-api-phone:17.0.0
com.google.android.gms:play-services-auth-base-license:17.0.0
com.google.android.gms:play-services-auth-base:17.0.0
com.google.android.gms:play-services-auth:17.0.0
com.google.android.gms:play-services-base:17.0.0
com.google.android.gms:play-services-basement:17.0.0
com.google.android.gms:play-services-drive-license:17.0.0
com.google.android.gms:play-services-drive:17.0.0
com.google.android.gms:play-services-games-license:17.0.0
com.google.android.gms:play-services-games:17.0.0
com.google.android.gms:play-services-gcm:17.0.0
com.google.android.gms:play-services-iid:17.0.0
com.google.android.gms:play-services-measurement-base:17.0.0
com.google.android.gms:play-services-nearby-license:17.0.0
com.google.android.gms:play-services-nearby:17.0.0
com.google.android.gms:play-services-stats:17.0.0
com.google.android.gms:play-services-tasks:17.0.0
com.google.firebase:firebase-analytics-impl:17.0.0
com.google.firebase:firebase-analytics:17.0.0
com.google.firebase:firebase-common:17.0.0
com.google.firebase:firebase-core:17.0.0
com.google.firebase:firebase-iid-interop:17.0.0
com.google.firebase:firebase-iid:17.0.0
com.google.firebase:firebase-measurement-connector-impl:17.0.0
UnityEngine.Debug:LogError(Object)
Google.Logger:Log(String, LogLevel)
GooglePlayServices.PlayServicesResolver:Log(String, LogLevel)
GooglePlayServices.ResolverVer1_1:LogMissingDependenciesError(List`1)
GooglePlayServices.<DoResolutionUnsafe>c__AnonStorey4:<>m__1(List`1)
GooglePlayServices.<GradleResolution>c__AnonStorey0:<>m__0(Result)
GooglePlayServices.<GradleResolution>c__AnonStorey1:<>m__0()
GooglePlayServices.PlayServicesResolver:PumpUpdateQueue()
UnityEditor.EditorApplication:Internal_CallUpdateFunctions()
和警告
Some conflicting dependencies were found.
The following dependency versions were modified:
com.google.firebase:firebase-iid-interop:16.0.0 --> com.google.firebase:firebase-iid-interop:17.0.0
com.google.android.gms:play-services-auth-api-phone:11.6.2 --> com.google.android.gms:play-services-auth-api-phone:17.0.0
com.google.firebase:firebase-common:16.0.0 --> com.google.firebase:firebase-common:17.0.0
com.google.android.gms:play-services-basement:15.0.1 --> com.google.android.gms:play-services-basement:17.0.0
com.google.android.gms:play-services-tasks:15.0.1 --> com.google.android.gms:play-services-tasks:17.0.0
com.google.android.gms:play-services-games:11.6.2 --> com.google.android.gms:play-services-games:17.0.0
com.google.firebase:firebase-measurement-connector-impl:16.0.0 --> com.google.firebase:firebase-measurement-connector-impl:17.0.0
com.google.android.gms:play-services-ads-identifier:15.0.1 --> com.google.android.gms:play-services-ads-identifier:17.0.0
com.google.android.gms:play-services-drive-license:11.6.2 --> com.google.android.gms:play-services-drive-license:17.0.0
com.google.firebase:firebase-analytics:16.0.0 --> com.google.firebase:firebase-analytics:17.0.0
com.google.android.gms:play-services-auth-base:11.6.2 --> com.google.android.gms:play-services-auth-base:17.0.0
com.google.firebase:firebase-measurement-connector:16.0.0 --> com.google.firebase:firebase-measurement-connector:17.0.0
com.google.android.gms:play-services-base:15.0.1 --> com.google.android.gms:play-services-base:17.0.0
com.google.android.gms:play-services-auth-base-license:11.6.2 --> com.google.android.gms:play-services-auth-base-license:17.0.0
com.google.android.gms:play-services-nearby-license:11.6.2 --> com.google.android.gms:play-services-nearby-license:17.0.0
com.google.android.gms:play-services-gcm:11.0.4 --> com.google.android.gms:play-services-gcm:17.0.0
com.google.firebase:firebase-core:16.0.0 --> com.google.firebase:firebase-core:17.0.0
com.google.firebase:firebase-iid:16.0.0 --> com.google.firebase:firebase-iid:17.0.0
com.google.android.gms:play-services-nearby:11.6.2 --> com.google.android.gms:play-services-nearby:17.0.0
com.google.android.gms:play-services-games-license:11.6.2 --> com.google.android.gms:play-services-games-license:17.0.0
com.google.android.gms:play-services-measurement-base:15.0.4 --> com.google.android.gms:play-services-measurement-base:17.0.0
com.google.android.gms:play-services-auth-api-phone-license:11.6.2 --> com.google.android.gms:play-services-auth-api-phone-license:17.0.0
com.android.support:exifinterface:26.0.1 --> com.android.support:exifinterface:26.1.0
com.google.android.gms:play-services-iid:11.0.4 --> com.google.android.gms:play-services-iid:17.0.0
com.google.android.gms:play-services-drive:11.6.2 --> com.google.android.gms:play-services-drive:17.0.0
com.google.firebase:firebase-analytics-impl:16.0.0 --> com.google.firebase:firebase-analytics-impl:17.0.0
com.google.android.gms:play-services-auth:11.6.2 --> com.google.android.gms:play-services-auth:17.0.0
com.google.android.gms:play-services-stats:15.0.1 --> com.google.android.gms:play-services-stats:17.0.0
UnityEngine.Debug:LogWarning(Object)
Google.Logger:Log(String, LogLevel)
GooglePlayServices.PlayServicesResolver:Log(String, LogLevel)
GooglePlayServices.<GradleResolution>c__AnonStorey0:<>m__0(Result)
GooglePlayServices.<GradleResolution>c__AnonStorey1:<>m__0()
GooglePlayServices.PlayServicesResolver:PumpUpdateQueue()
UnityEditor.EditorApplication:Internal_CallUpdateFunctions()