How to remove gaps between polygons when exporting from Illustrator to SVG?

Question

Adobe Illustrator

When exporting such graphics to SVG: This is what happens

:

How can I fix this?
UPD: In Inkscape:

Answer 1

How do you get it? A few months ago I collected exactly such polygonal backgrounds, nothing like this happened, svg are all saved and displayed normally.
Show the source file, if possible, and the svg that you get

Answer 2

Adding a background background filled with a color that matches the one used will solve the problem.