Minion uses the database of this website
www.esoui.com.
The website was slow and got problems a few hours ago.
Just check, if Minion is not working, if you are able to access the website and download the addons manually.
If this is not working properly Minion won't work properly and ther eis NO NEED to reinstall it. Just wait.
Should be fine again since ~1 hour.
If it's still not working with Minion close Minion, backup your Minion.xml file and delete/rename it. Then try to run it again as if it was installed freshly.
Could need some time after the addon dir was selected and scanned for the addons so restart minion after e.g. waiting 5 minutes and check if the addons are shown properly again after that, or restrat it again until it does.