White border on sides of image when exporting an svg file

Step 1 - 

Click on the Artbord editor Icon 
go to the Custom Drop down right under the FILE tab in the menu

Select "Fit to Selected Art"

then 

Step 2-

Export from the Top Menu Bar
Select Save as > SVG

when a pop up comes .. select SVG 1.1 from the top drop down 

in the Fonts - Type > select SVG

in the Options: Embed

i just solved it today .. had similar issue when uploading to the website .. i hope it helps .. 🙂 

Check for stray vectors and if anything is hanging out over the edge of the artboard, try using the Pathfinder tool to manually crop to the artboard.

What application are you viewing the image in? Are you sure that the white spaces are part of the image, and not just empty space in the window because the image is not proportional to it?

Peter