2019-08-12 15:29:48.984077+0200  localhost backupd[46742]: (TimeMachine) [com.apple.TimeMachine:TMLogInfo] Starting automatic backup
2019-08-12 15:29:48.984928+0200  localhost backupd[46742]: (TimeMachine) [com.apple.TimeMachine:TMLogInfo] Failed to find matching sparsebundle in directory '/Volumes/SeagateBackup', directory contents: (
    ".fseventsd",
    ".Spotlight-V100",
    "Backups.backupdb"
)
2019-08-12 15:29:48.992165+0200  localhost backupd[46742]: (TimeMachine) [com.apple.TimeMachine:TMLogInfo] Backing up to /dev/disk4: /Volumes/SeagateBackup/Backups.backupdb
2019-08-12 15:29:49.038945+0200  localhost backupd[46742]: (TimeMachine) [com.apple.TimeMachine:TMLogError] Failed to remove attribute 'com.apple.backupd.SnapshotVolumeFSEventStoreUUID' from 'file:///', error: Error Domain=NSPOSIXErrorDomain Code=1 "Operation not permitted"
2019-08-12 15:29:49.041841+0200  localhost backupd[46742]: (TimeMachine) [com.apple.TimeMachine:TMLogError] Failed to remove attribute 'com.apple.backupd.SnapshotVolumeLastFSEventID' from 'file:///', error: Error Domain=NSPOSIXErrorDomain Code=1 "Operation not permitted"
2019-08-12 15:29:49.041998+0200  localhost backupd[46742]: (TimeMachine) [com.apple.TimeMachine:TMLogError] Failed to remove attribute 'com.apple.backupd.SnapshotVolumeUUID' from 'file:///', error: Error Domain=NSPOSIXErrorDomain Code=1 "Operation not permitted"
2019-08-12 15:29:49.042124+0200  localhost backupd[46742]: (TimeMachine) [com.apple.TimeMachine:TMLogError] Failed to remove attribute 'com.apple.backupd.PreviousSnapshotVolumeUUID' from 'file:///', error: Error Domain=NSPOSIXErrorDomain Code=1 "Operation not permitted"
2019-08-12 15:29:49.042256+0200  localhost backupd[46742]: (TimeMachine) [com.apple.TimeMachine:TMLogError] Failed to remove attribute 'com.apple.backupd.PreviousSnapshotVolumeName' from 'file:///', error: Error Domain=NSPOSIXErrorDomain Code=1 "Operation not permitted"
2019-08-12 15:29:49.042411+0200  localhost backupd[46742]: (TimeMachine) [com.apple.TimeMachine:TMLogError] Failed to remove attribute 'com.apple.backupd.VolumeBytesUsed' from 'file:///', error: Error Domain=NSPOSIXErrorDomain Code=1 "Operation not permitted"
2019-08-12 15:29:49.042476+0200  localhost backupd[46742]: (TimeMachine) [com.apple.TimeMachine:TMLogError] Failed to remove attribute 'com.apple.backupd.VolumeIsCaseSensitive' from 'file:///', error: Error Domain=NSPOSIXErrorDomain Code=1 "Operation not permitted"
2019-08-12 15:29:49.042532+0200  localhost backupd[46742]: (TimeMachine) [com.apple.TimeMachine:TMLogError] Failed to remove attribute 'com.apple.backupd.fstypename' from 'file:///', error: Error Domain=NSPOSIXErrorDomain Code=1 "Operation not permitted"
2019-08-12 15:29:49.042586+0200  localhost backupd[46742]: (TimeMachine) [com.apple.TimeMachine:TMLogError] Failed to remove attribute 'com.apple.backupd.VolumeIsEncrypted' from 'file:///', error: Error Domain=NSPOSIXErrorDomain Code=1 "Operation not permitted"
2019-08-12 15:29:49.061248+0200  localhost backupd[46742]: (TimeMachine) [com.apple.TimeMachine:TMLogError] Failed to write unlock record UUIDs as extended attribute for disk '/', error: Error Domain=NSPOSIXErrorDomain Code=1 "Operation not permitted"
2019-08-12 15:29:49.192342+0200  localhost backupd[46742]: (TimeMachine) [com.apple.TimeMachine:TMLogError] Failed to create APFS snapshot with name 'com.apple.TimeMachine.2019-08-12-152949' on volume '/', error: Error Domain=NSPOSIXErrorDomain Code=5 "Input/output error"
2019-08-12 15:29:49.194573+0200  localhost backupd[46742]: (TimeMachine) [com.apple.TimeMachine:TMLogError] Failed to create local snapshots
2019-08-12 15:29:49.197410+0200  localhost backupd[46742]: (TimeMachine) [com.apple.TimeMachine:TMLogError] Failed to create or mount stable snapshot.
2019-08-12 15:29:49.206518+0200  localhost backupd[46742]: (TimeMachine) [com.apple.TimeMachine:TMLogError] Backup failed with error 49: 49