Possible, yes. Unfortunately the log doesn’t tell what is actually bugging the updater.
When did you try the update the last time? Are the log entries the very latest ones?
I’m asking because of the timestamps from the logs: 2019-08-11
Date and time are set correctly on your server, right?
Can you visually check for the step file via FTP with hidden files shown? It might be a solution to delete this file in order to make the updater start with step one again and download the latest NC version instead of the previous one.
I believe the step file is named “.step” (so hidden) and is placed in the updater folder. Please look for it, it must be somewhere, then create a backup of that file (move it somewhere else) and retry the web updater.