Upgrade 6.7 to 6.8 fails during satellite-installer keytool: unknown named curve

Hello Experts!

We are trying to upgrade from Satellite 6.7 -> 6.8.

During the satellite-installer part of the upgrade we get an issue when satellite-installer runs keytool to import a key. As shown below;

When we try to run keytool manually we get the following error;

It would seem that this is related to openjdk not supporting elliptic curve that is required.

We are runnning the latest patched version of RHEL 7.9, Openjdk 1.8.0 and Satellite 6.8.6, the full versions are in the screenshot below;