[Solved] Dolphin BrawlEx error message

[DUMMY]

Whenever I select a specific BrawlEx character (ID 49) and the match begins I get this error message:

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I select "OK" and the game functions properly after that but it's annoying having this message pop-up every time I select this character. This problem doesn't occur with any of my other BrawlEx character and the message only appears when player one selects the character.

Edit: appears a few cosmetic files were missing