I have created a couple of galleries in the component which have given me the Syntax
{gallery}id1{/gallery} & {gallery}id2{/gallery}
and added these to a module which is displayed using SP Pagebuilder Pro.
The galleries display fine but i get this error message on the page which wont go away!
There was a problem rendering your image gallery. Please make sure that the folder you are using in the Simple Image Gallery plugin tags exists and contains valid image files. The plugin could not locate the folder:Joomla\CMS\Filesystem\Folder::files: Path is not a folder. Path: [ROOT]/images/id1 Joomla\CMS\Filesystem\Folder::files: Path is not a folder. Path: [ROOT]/images/id2