By default svg images doesn’t work in older versions of Domino like version 9.01, 10 perhaps even 11
I have verified in version 12 and there it work fine without problems.

First if you can you should upgrade to version 12 it has so much great features but if you can’t do this for some reason. Luckily there is an easy fix, in the Domino data directory there is a file httpd.cnf open up this file add add this line below i.e the Images section, placement isn’t important.

AddType .svg image/svg+xml # SVG format

save the file and restart you domino server. Remember that cache is always kicking in if you are trying to check if something like this working ???