It is a problem with your SVG image itself. If you open the file directly in FireFox you would see the same https://www.ohmynatura.com/file/2021/04/oh-my-natura-logo.svg
You need to ask your designer or somebody who created this logo image to check this issue. It is not something related to the theme.
Could you please check how it works with some default WordPress themes like TwentyTwenty or WooCommerce Storefront to understand is it our theme issue or not?