android.os.BadParcelableException: ClassNotFoundException when unmarshalling: com.facebook.flatbuffers.helpers.FlatBufferModelHelper$LazyHolder

Question

I'm seeing this crash in Crashlytics for an app that's currently in production:

Caused by android.os.BadParcelableException: ClassNotFoundException when unmarshalling: com.facebook.flatbuffers.helpers.FlatBufferModelHelper$LazyHolder
   at android.os.Parcel.readParcelableCreator(Parcel.java:2295)
   at android.os.Parcel.readParcelable(Parcel.java:2245)
   at android.os.Parcel.readValue(Parcel.java:2152)
   at android.os.Parcel.readArrayMapInternal(Parcel.java:2485)
   at android.os.BaseBundle.unparcel(BaseBundle.java:221)
   at android.os.BaseBundle.containsKey(BaseBundle.java:269)
   at android.content.Intent.hasExtra(Intent.java:5632)
   ...

I'm really unsure of what could be causing this issue. I can't even find a FlatBufferModelHelper class in the facebook-android-sdk.

Unfortunately, I don't really have any more information than this. This crash does seem to affect all devices of all API levels.

Thanks for any info!