What does "uninstalled all mods" actually mean?
Uninstalled in a Mod manager? Probably not enough.
Deleted the all mod .dll-files from "...\SteamApps\common\Valheim\BepInEx\plugins"? Not enough. see https://steamcommunity.com/app/892970/discussions/1/3154202776531668586/

Rename:
This stops BepInEx cold in its tracks because it doesn't even get injected into the valheim.exe process anymore => completely disables BepInEx (and all mods requiring it).
+ Steam's "Verify integrity of game files"

Or delete the whole Valheim game folder and let Steam download it again.

And this belongs in the sub-forum "Bugs & Technical Issues"...