There is not need to worry. I just had updated almost all packages.
It is a bug on the standard Package Control and Sublime Text, to show up a lot of repeated error messages. A quick fix is replace Package Control with PackagesManager. PackagesManager is my version of Package Control with a few fixes.
It is show a lot of these errors recently GitHub blocked the usage of TLS 1.1 and Sublime Text uses Python 3.3, which is very old and it it seems Package Control cannot handle it correctly yet, or perhaps your version of Package Control is outdated.
You can install PackagesManager by going on the menu `Preferences -> Package Control` and type `Install Package`, press enter and type `PackagesManager`. If you cannot install PackagesManager by the menu because Package Control is not working, then you can directly download it from GitHub:
PackagesManager/archive/master.zip
- First, go to the menu `Preferences -> Browse Packages...`
- Close Sublime Text
- Then you need to unpack `PackagesManager.zip` on your `Packages` directory
- After that, rename it from `PackagesManager-master` to `PackagesManager` only
- Now open Sublime Text, and as soon as PackagesManager is loads, it will uninstall Package Control.