Tor Browser Downloader by Whonix will currently show.
Could not find out latest Tor Browser version! Excessive version string length. (323 characters) Either check.torproject.org has been compromised or this is a Whonix bug.
The download server is down.
File size exceeded (endless data attack triggered).
Tor Browser Downloader (by Whonix developers) has been broken due to upstream changes.
Try again later. If the error persists it probably won’t solve itself before the next update.
Check News: https://www.whonix.org/wiki/Stay_Tuned
Manually update: https://www.whonix.org/wiki/Manually_Updating_Tor_Browser
This is a known bug. No indicator for a security concern. It has already been reported to Tor Project:
Meanwhile please refer to: