"A synchronization error has occurred"

I have been getting this message every time Proclaim tries to sync from my PC since yesterday morning. I've tried restarting the PC.
Help About says it is up to daye (3.2.0.0030)
Help > Status says All services operational.
Is there anything I can check locally to see why it won't sync like a log file?
Thanks,
Jim
Comments
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I found a proclaim log that contains a sync error.
022-03-14 20:31:57.9991 (local: 20:31:57) | 1 | INFO | ElementUtility | Couldn't find default focus; focus set to first focusable item.
2022-03-14 20:31:57.9991 (local: 20:31:57) | 28 | INFO | SyncManager | Requesting sync on all sync clients
2022-03-14 20:31:58.0140 (local: 20:31:58) | 28 | INFO | FaithlifeMusicSyncClient | Found 1 items to submit for ArrangementSyncItemDto
2022-03-14 20:31:58.0259 (local: 20:31:58) | 28 | INFO | FaithlifeMusicSyncClient | (Timed) Submitting 1 of 1 items.
2022-03-14 20:31:58.8846 (local: 20:31:58) | 28 | INFO | FaithlifeMusicSyncClient | (858ms) Submitting 1 of 1 items.
2022-03-14 20:31:58.8951 (local: 20:31:58) | 28 | ERROR | DatabaseSyncClientRepository | Item of type ArrangementSyncItemDto failed to submit; marked as error: cd9061aca0a24b4dbeceeceffd9ab7d5. Message: An error occurred submitting the sync item.
2022-03-14 20:31:58.8951 (local: 20:31:58) | 28 | INFO | FaithlifeMusicSyncClient | Integrated 0 successes, 0 conflicts, and 1 errors.
2022-03-14 20:31:58.8951 (local: 20:31:58) | 28 | INFO | FaithlifeMusicSyncClient | Downloading items for ArrangementSyncItemDto
2022-03-14 20:31:59.2715 (local: 20:31:59) | 28 | INFO | FaithlifeMusicSyncClient | New last known milestones: {"permissionMilestone":"2","itemMilestone":"9730383"}
2022-03-14 20:31:59.2715 (local: 20:31:59) | 28 | ERROR | SyncV2Client | Sync client errors: 1 upload, 0 download
2022-03-14 20:31:59.2715 (local: 20:31:59) | 28 | ERROR | SyncManager | Sync client ArrangementSyncItemDto error: ClientError (RetryErrors)
2022-03-14 20:31:59.2715 (local: 20:31:59) | 28 | INFO | ConfidenceSyncClient | Downloading items for ConfidenceTemplateSyncItemDto
2022-03-14 20:32:00.1662 (local: 20:32:00) | 28 | INFO | ConfidenceSyncClient | New last known milestones: {"itemMilestone":"34113"}
2022-03-14 20:32:00.1662 (local: 20:32:00) | 28 | INFO | PreferencesSyncClient | Downloading items for PreferencesSyncItem
2022-03-14 20:32:00.6784 (local: 20:32:00) | 28 | INFO | PreferencesSyncClient | New last known milestones: {"permissionMilestone":"2","itemMilestone":"29526952"}
2022-03-14 20:32:00.6928 (local: 20:32:00) | 28 | INFO | PresentationSyncClient | Downloading items for PresentationSyncItemDto
2022-03-14 20:32:01.0559 (local: 20:32:01) | 28 | INFO | PresentationSyncClient | Unchanged last known milestones: {"permissionMilestone":"2","itemMilestone":"15472394"}
2022-03-14 20:32:01.0559 (local: 20:32:01) | 28 | INFO | SyncManager | Finished requesting sync on all sync clients.0 -
(I submitted the log files using the option in Proclaim)
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