我设法使Firebase crashlytics正常工作，问题是，它仅在调试时有效。我不知道发行版本有什么问题。我在发布版本的构建gradle中没有做任何特殊的事情。这是错误
2020-01-16 11:28:06.478 26363-26411/? W/CrashlyticsCore: Cannot send reports. Settings are unavailable.
2020-01-16 11:28:06.478 26363-26363/? D/CrashlyticsCore: Crashlytics completed exception processing. Invoking default exception handler.
2020-01-16 11:28:06.496 3161-3175/? W/BroadcastQueue: Background execution not allowed: receiving Intent { act=android.intent.action.DROPBOX_ENTRY_ADDED flg=0x10 (has extras) } to com.sonyericsson.crashmonitor/.receiver.CrashMonitorServiceBroadcastReceiver
2020-01-16 11:28:06.599 19566-19566/? W/ContextImpl: Calling a method in the system process without a qualified user: android.app.ContextImpl.startService:1531 android.content.ContextWrapper.startService:664 android.content.ContextWrapper.startService:664 com.sonyericsson.crashmonitor.receiver.CrashMonitorServiceBroadcastReceiver.onReceive:54 android.app.ActivityThread.handleReceiver:3386
2020-01-16 11:28:06.626 3161-3175/? W/BroadcastQueue: Background execution not allowed: receiving Intent { act=android.intent.action.DROPBOX_ENTRY_ADDED flg=0x10 (has extras) } to com.sonyericsson.crashmonitor/.receiver.CrashMonitorServiceBroadcastReceiver
2020-01-16 11:28:06.743 3161-3175/? W/BroadcastQueue: Background execution not allowed: receiving Intent { act=android.intent.action.DROPBOX_ENTRY_ADDED flg=0x10 (has extras) } to com.sonyericsson.crashmonitor/.receiver.CrashMonitorServiceBroadcastReceiver
2020-01-16 11:28:11.674 26741-26741/? I/CrashlyticsCore: Initializing Crashlytics Core 2.7.0.33
2020-01-16 11:28:11.686 26741-26785/? D/CrashlyticsCore: Found previous crash marker.
2020-01-16 11:28:11.688 26741-26741/? D/CrashlyticsCore: Exception handling initialization successful
2020-01-16 11:28:11.688 26741-26741/? I/CrashlyticsInitProvider: CrashlyticsInitProvider initialization successful
2020-01-16 11:28:11.690 26741-26785/? D/CrashlyticsCore: Opening a new session with ID 5E1F91FB02B0-0001-6875-EBC78A642606
2020-01-16 11:28:12.299 26741-26785/? D/CrashlyticsCore: Initialization marker file created.
2020-01-16 11:28:12.301 26741-26777/? W/CrashlyticsCore: Received null settings, skipping report submission!
2020-01-16 11:28:12.302 26741-26785/? D/CrashlyticsCore: Initialization marker file removed: true
我一直在搜索互联网，发现有些人也有同样的问题。尝试了每种解决方案都无济于事。我什至有一个带有google-service.json的发布和调试文件夹，仍然无法正常工作。有什么帮助吗？谢谢