Minion sometimes installs addon "patches" (not the whole addon but patches that are made for an addon and are named the same liek the addon) which are made with different languages.
It seems some addon was updated with a korean patch and this might have broken your client here.
Logout!
Search your installed addons and check here on esoui if there are existing addons which got some patch named with KR or Korean. Uninstall this addon then and install the original non-KR version again (maybe manually if Minion installs the wrong one).
Someone recently had a similar problem:
https://www.esoui.com/forums/showthread.php?t=8684
The addon was "Alchemy KR patch" and overwrote the Alchemy addon.
Or login, at teh character selection switch to the addons tab and disable all addons except Bandits UI and the needed libraries.
Login then.
In the chat use this command:
Code:
/script SetCVar("language.2","en")
A reloadui is done and this will switch your language to English.
Use fr for French or de for German.