what is written here?
you could try storing your image here:
C:\Program Files\Inductive Automation\Ignition\webserver\webapps\main\xx.svg
and call it in your imgcomponent directly with /xx.svg
(note igntion will lock this file (on windows?) so you wont be able to just delete/update it. Unless you use this:
Unblock and Delete files that have been locked by Java)
Or there is a module that could be interesting to check, to store it in a db