Can someone help me with this error please

error: value of type 'Matrix' cannot be copied into its destination
        return new_matirx

struct Matrix:
    var height: Int
    var width: Int
    var total_items: Int
    var data: Pointer[Float32]

    fn __init__(inout self, height: Int, width: Int, default_value: Float32) -> None:
        self.height = height
        self.width = width
        self.total_items = height * width
        self.data = Pointer[Float32].alloc(self.total_items)
        for item in range(self.total_items):
            self.data.store(item, default_value)

    fn __setitem__(inout self, row: Int, col: Int, item: Float32) -> None:
        let loc: Int = (row * self.width) + col
        self.data.store(loc, item)

    fn __getitem__(borrowed self, row: Int, col: Int) -> Float32:
        let loc: Int = (row * self.width) + col
        return self.data.load(loc)
    
    fn __copyinnit__(inout self, other: Self) -> None:
        self.height = other.height
        self.width = other.width
        self.total_items = other.total_items
        self.data = Pointer[Float32].alloc(self.total_items)
        for item in range(self.total_items):
            self.data.store(item, other.data.load(item))
    
    fn __add__(borrowed self, rhs: Matrix) -> Matrix:
        if self.height != rhs.height and self.width != rhs.width:
            return Matrix(self.height, self.width, Float32(0))
        var new_matirx = Matrix(self.height, self.width, Float32(0))
        for row in range(self.height):
            for col in range(self.width):
                new_matirx[row, col] = self[row, col] + rhs[row, col]
        return new_matirx