I can only see two failed download attempt in your log:
1.
Code:
jd.plugins.PluginException: 429 too many requests->ERROR_HOSTER_TEMPORARILY_UNAVAILABLE
2.
Code:
jd.plugins.PluginException: Insufficient permissions: Private file->ERROR_FATAL
The first one can happen at any time.
The 2nd one is most likely a wrong errormessage caused by some unknown glitch in our google drive plugin that we weren't yet able to find.
What happens if the file stops during download "at 60%"?
Any errormessage?
Please try the following whenever you're running into this issue:
Delete your google account in JDownloader, re-add it and try again.