If you are using the Next.js integration mod with SVR.JS, you may need to update the mod to 1.1.0 or later to use SVR.JS for serving Next.js 15 applications.
To update the mod, simply delete the old mod file from the mods directory, and copy the mod to the mods directory in the SVR.JS installation directory.
Download the Next.js integration mod from the mod downloads page.