No traceback available

Not sure why this just started happening after Sync working fine since Mozilla changed the system months ago. Here's my log: 1406657461555 Sync.ErrorHandler DEBUG Flushing file log. 1406657461559 Sync.Status DEBUG Status.service: error.sync.failed_partial => success.status_ok 1406657461559 Sync.ErrorHandler DEBUG Log cleanup threshold time: 1405793461559 1406657461563 Sync.ErrorHandler DEBUG No logs to clean up. 1406657463869 Sync.SyncScheduler DEBUG Global Score threshold hit, triggering sync. 1406657463926 Sync.Service DEBUG User-Agent: Firefox/30.0 FxSync/1.32.0.20140605174243. 1406657463926 Sync.Service INFO Starting sync at 2014-07-29 14:11:03 1406657463927 Sync.SyncScheduler DEBUG Clearing sync triggers and the global score. 1406657463927 Sync.Status INFO Resetting Status. 1406657463927 Sync.Status DEBUG Status.service: success.status_ok => success.status_ok 1406657463928 Sync.BrowserIDManager DEBUG _ensureValidToken already has one 1406657464083 Sync.Resource DEBUG mesg: GET success 200 https://sync-39-us-west-2.sync.services.mozilla.com/1.5/1798619/info/collections 1406657464083 Sync.Resource DEBUG GET success 200 https://sync-39-us-west-2.sync.services.mozilla.com/1.5/1798619/info/collections 1406657464083 Sync.Service DEBUG Fetching global metadata record 1406657464083 Sync.Service DEBUG Clearing cached meta record. metaModified is 1406656860.35, setting to 1406657440.8 1406657464084 Sync.BrowserIDManager DEBUG _ensureValidToken already has one 1406657464151 Sync.SyncScheduler DEBUG Next sync in 600000 ms. 1406657464210 Sync.Resource DEBUG mesg: GET success 200 https://sync-39-us-west-2.sync.services.mozilla.com/1.5/1798619/storage/meta/global 1406657464210 Sync.Resource DEBUG GET success 200 https://sync-39-us-west-2.sync.services.mozilla.com/1.5/1798619/storage/meta/global 1406657464211 Sync.Service DEBUG Weave Version: 1.32.0 Local Storage: 5 Remote Storage: 5 1406657464211 Sync.Service INFO Sync key is up-to-date: no need to upgrade. 1406657464211 Sync.Service DEBUG Fetching and verifying -- or generating -- symmetric keys. 1406657464211 Sync.Service INFO Testing info/collections: {"passwords":1406643575.94,"tabs":1406648456.01,"clients":1406656552.92,"crypto":1400888380.88,"forms":1406656731.6,"meta":1406657440.8,"bookmarks":1406645022.72,"addons":1404857211.24,"history":1406648258.8} 1406657464211 Sync.CollectionKeyManager INFO Testing for updateNeeded. Last modified: 1400888380.88 1406657464211 Sync.Synchronizer DEBUG Refreshing client list. 1406657464213 Sync.Engine.Clients INFO 0 outgoing items pre-reconciliation 1406657464214 Sync.Engine.Clients INFO Records: 0 applied, 0 successfully, 0 failed to apply, 0 newly failed to apply, 0 reconciled. 1406657464216 Sync.Synchronizer INFO Updating enabled engines: 2 clients. 1406657464220 Sync.Engine.Bookmarks INFO 0 outgoing items pre-reconciliation 1406657464223 Sync.Engine.Bookmarks INFO Records: 0 applied, 0 successfully, 0 failed to apply, 0 newly failed to apply, 0 reconciled. 1406657464225 Sync.Engine.Forms INFO 6 outgoing items pre-reconciliation 1406657464225 Sync.Engine.Forms INFO Records: 0 applied, 0 successfully, 0 failed to apply, 0 newly failed to apply, 0 reconciled. 1406657464238 Sync.Engine.Forms INFO Uploading all of 6 records 1406657464238 Sync.BrowserIDManager DEBUG _ensureValidToken already has one 1406657464239 Sync.Collection DEBUG POST Length: 1757 1406657464731 Sync.Tracker.History DEBUG Saving changed IDs to history 1406657465213 Sync.Tracker.Clients DEBUG Saving changed IDs to clients 1406657465221 Sync.Tracker.Bookmarks DEBUG Saving changed IDs to bookmarks 1406657465239 Sync.Tracker.Forms DEBUG Saving changed IDs to forms 1406657492536 Sync.Tracker.History DEBUG Saving changed IDs to history 1406657494699 Sync.Tracker.History DEBUG Saving changed IDs to history 1406657497646 Sync.Tracker.History DEBUG Saving changed IDs to history 1406657504290 Sync.Collection DEBUG mesg: POST success 200 https://sync-39-us-west-2.sync.services.mozilla.com/1.5/1798619/storage/forms 1406657504290 Sync.Collection DEBUG POST success 200 https://sync-39-us-west-2.sync.services.mozilla.com/1.5/1798619/storage/forms 1406657504294 Sync.Engine.History INFO 164 outgoing items pre-reconciliation 1406657504295 Sync.Engine.History INFO Records: 0 applied, 0 successfully, 0 failed to apply, 0 newly failed to apply, 0 reconciled. 1406657504416 Sync.Engine.History INFO Uploading 0 - 100 out of 164 records 1406657504416 Sync.BrowserIDManager DEBUG _ensureValidToken already has one 1406657504419 Sync.Collection DEBUG POST Length: 62022 1406657505294 Sync.Tracker.History DEBUG Saving changed IDs to history 1406657507524 Sync.Tracker.History DEBUG Saving changed IDs to history 1406657517191 Sync.Tracker.History DEBUG Saving changed IDs to history 1406657566434 Sync.Tracker.History DEBUG Saving changed IDs to history 1406657589226 Sync.Collection DEBUG mesg: POST fail 502 https://sync-39-us-west-2.sync.services.mozilla.com/1.5/1798619/storage/history 1406657589226 Sync.Collection DEBUG POST fail 502 https://sync-39-us-west-2.sync.services.mozilla.com/1.5/1798619/storage/history 1406657589227 Sync.Engine.History DEBUG Uploading records failed: <html> <head><title>502 Bad Gateway</title></head> <body bgcolor="white"> <center><h1>502 Bad Gateway</h1></center> <hr><center>nginx/1.6.0</center> </body> </html> 1406657589234 Sync.Status DEBUG Status for engine history: error.engine.reason.record_upload_fail 1406657589234 Sync.Status DEBUG Status.service: success.status_ok => error.sync.failed_partial 1406657589234 Sync.ErrorHandler DEBUG history failed: <html> <head><title>502 Bad Gateway</title></head> <body bgcolor="white"> <center><h1>502 Bad Gateway</h1></center> <hr><center>nginx/1.6.0</center> </body> </html> No traceback available 1406657589234 Sync.Synchronizer INFO Aborting sync for failure in history 1406657589234 Sync.Synchronizer INFO Sync completed at 2014-07-29 14:13:09 after 125.31 secs. 1406657589235 Sync.Declined DEBUG Handling remote declined: [] 1406657589235 Sync.Declined DEBUG Handling local declined: [] 1406657589235 Sync.Declined DEBUG Declined changed? false 1406657589236 Sync.Service INFO No change to declined engines. Not reuploading meta/global. 1406657589237 Sync.SyncScheduler DEBUG Starting client-initiated backoff. Next sync in 6301000 ms. 1406657589237 Sync.SyncScheduler DEBUG Next sync in 6301000 ms. 1406657589237 Sync.ErrorHandler DEBUG Some engines did not sync correctly. __________________________________________________________________________________________ Can somebody tell me what to do to stop getting error messages at the bottom of my FF screen?