SwiftUIで、特定のcsvファイルだけ読み込み時に致命的エラーが出て困っています。

Thread 1: Fatal error: Unexpectedly found nil while unwrapping an Optional value

func loadCSV(fileName: String) -> [String] {
    let csvBundle = Bundle.main.path(forResource: fileName, ofType: "csv")!
    var csvArray:[String] = []
    do{
        let csvData = try String(contentsOfFile: csvBundle, encoding: String.Encoding.utf8)
        let lineChange = csvData.replacingOccurrences(of: "\r", with: "\n")
        csvArray = lineChange.components(separatedBy: "\n")
        csvArray.removeLast()
    }catch{
        print("エラー")
    }
    return csvArray
}