Android 15 changed how file access and sharing work. The old Capacitor 7 method may no longer trigger the share sheet. Update your code to use the new Filesystem and Share plugin APIs with proper permissions for Android 15, and ensure you request MANAGE_EXTERNAL_STORAGE or use scoped storage as required.
By default, Capacitor apps only allow to share files from caches folder. To make other Android folders shareable, they have to be added in android/app/src/main/res/xml/file_paths.xml file. Check the Specifying Available Files section in FileProvider docs for the available locations. - source