OpenVPN, Openconnect, openssl packages are missing,

Hi,

I'm using 18.06.2 on D-link DWR-921 C1, after running opkg update and trying to install these packages i got the error package not found.
I checked the download URL directly, These packages are missing.
https://downloads.openwrt.org/releases/18.06.2/packages/mipsel_24kc/packages/