That's not an error message either. It's supposed to look like that while the game is starting.
If you just want to get rid of the messages, disable "Show On-Screen Messages" (called "On-Screen Display Messages" in older versions of Dolphin) in the Interface tab of the settings.
If you just want to get rid of the messages, disable "Show On-Screen Messages" (called "On-Screen Display Messages" in older versions of Dolphin) in the Interface tab of the settings.