ok i found the solution and it was very strange and dumb at the same time. i went to project settings and went to foliage and turns out the foliage data table was empty. now i dont think it was because i deleted the foliage data table because this error was before i deleted it. but i think something happened and just took the foliage data table from its place. so what i did just created a new foliage data table and put it in and that fixed it.
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