The issue was directly due to not using the secured endpoint for fetching the diffs. I wrote an answer detailing the solution in on stack overflow: https://gis.stackexchange.com/questions/295991/re-sync-osm-db-after-failure/301589#301589

The issue was directly due to not using the secured endpoint for fetching the diffs. I wrote an answer detailing the solution in stack overflow: https://gis.stackexchange.com/questions/295991/re-sync-osm-db-after-failure/301589#301589