There is a choice, fix the script. I do not have any scripting skills but it is still sometimes relatively easy
Fixed, remember to unzip it http://www.mediafire.com/file/4lb9s1ap9gxoo2z/subtle-vignette_0.scm.zip
A more universal way which glosses over the many scripts and plugins that contain deprecated procedures.
Run Gimp 2.9.x with the switch --pdb-compat-mode=on
In Windows add it to the launcher after the quotes something like this screenshot.