I have an svg file that I created in Illustrator that consists of a pattern - it was made using the swatch tool. When I try and load it locally it shows up blank in the browser
If you find that it works in Firefox, IE or Edge but not Chrome, this was my issue too.
I fixed it by opening the .SVG file in a text editor, and everywhere I saw this tag:
xlink:href="data:img/png;base64
I replaced it with
xlink:href="data:image/png;base64
This fixed it, and it displayed immediately. Hopefully this helps someone!!