If you're seeing an error like this in the launcher (regardless of game) please try the following:
1. Exit the Steam app entirely
2. Uninstall Paradox Launcher v2 from the Windows "Apps and features" utility, if still present.
Delete the following folders if still present:
- C:/users/<UserName>/AppData/Local/Programs/Paradox Interactive/
- C:/users/<UserName>/AppData/Local/Paradox Interactive/
- C:/users/<UserName>/AppData/Roaming/Paradox Interactive/launcher-v2/
To see the AppData folder you'll need to enable View Hidden Items in File Explorer.
3 Run steam.exe as the Windows Admin user
4. Run the game from the PLAY button in Steam