excel svg picture in my list corrupted after last update when i save from xls to xlsx. also it opens with error

After latest update, my svg picture in my excel list is not working.., svg pic is from my website, so i dont have to import the picture every time i sent the lists. now i have errors like corrupted data, any ideas ? before it was working fine and i have a lot lists to modify the pic or every new list to add the pic, its like a automation and now its not working, ty