26124 [2021-09-11 22:47:30.132] [background] [info] syncFolderUIDRange for Archiv, UIDs: 1 - 7212, Heavy: false 26124 [2021-09-11 22:47:30.866] [background] [info] - remote=7084, local=146 26124 [2021-09-11 22:47:30.867] [background] [info] - Fetching full headers for 6938 (of 6938 needed) 26124 [2021-09-11 22:48:18.347] [background] [critical] *** *** Mailspring Sync *** An exception occurred during program execution: *** {"debuginfo":"syncFolderUIDRange - fetchMessagesByUID (heavy)","key":"ErrorConnection","retryable":true,"what":"Unknown exception"} *** 26124 [2021-09-11 22:48:18.348] [background] [critical] *** Stack trace (line numbers are approximate): *** 761 SyncWorker::syncFolderUIDRange() *** 396 SyncWorker::syncNow() *** 202 runBackgroundSyncWorker() *** 691 ::operator() *** 210 _Pad::_Call_func() *** 26124 [2021-09-11 22:48:18.348] [background] [info] --sleeping 26124 [2021-09-11 22:49:21.300] [metadata] [info] Metadata delta stream closed. 26124 [2021-09-11 22:49:21.300] [metadata] [info] Metadata delta stream starting... 26124 [2021-09-11 22:50:18.360] [background] [info] Syncing folder list... 26124 [2021-09-11 22:50:19.704] [background] [critical] *** *** Mailspring Sync *** An exception occurred during program execution: *** {"debuginfo":"syncFoldersAndLabels - fetchAllFolders","key":"ErrorNamespace","retryable":false,"what":"Unknown exception"} *** 26124 [2021-09-11 22:50:19.704] [background] [critical] *** Stack trace (line numbers are approximate): *** 485 SyncWorker::syncFoldersAndLabels() *** 250 SyncWorker::syncNow() *** 202 runBackgroundSyncWorker() *** 691 ::operator() *** 210 _Pad::_Call_func() *** 19588 [2021-09-11 22:50:21.477] [main] [info] Identity created at 1623494754 - using ID Schema 1 19588 [2021-09-11 22:50:21.477] [main] [info] ------------- Starting Sync (MY_EMAIL_ADDRESS) --------------- 19588 [2021-09-11 22:50:21.481] [metadata] [info] Metadata delta stream starting... 19588 [2021-09-11 22:50:22.481] [background] [info] Marking all folders as `busy` 19588 [2021-09-11 22:50:22.489] [background] [info] Syncing folder list... 19588 [2021-09-11 22:50:25.674] [background] [critical] *** *** Mailspring Sync *** An exception occurred during program execution: *** {"debuginfo":"syncFoldersAndLabels - fetchAllFolders","key":"ErrorNamespace","retryable":false,"what":"Unknown exception"} ***