To expand on @RuralRoots' post...
- OpenWrt One shipped with a snapshot version. Because snapshot versions change frequently (nightly), the corresponding packages may not be available any longer.
- OpenWrt 24.10.0-rc5 is now available from the Firmware Selector
- All OpenWrt kernel packages are built to match that version, and are saved permanently.
- Most ordinary packages are stable and will continue to work with other release candidates. Packages for the final stable release are permanently archived.
The best advice for the "unavailable package" problem is to install the the newest release candidate, or the final stable release when it becomes available. Go to the Firmware Selector and flash the SYSUPGRADE file. It should be safe to keep settings during the installation.