according to your logs ovftool version 4.3 is used, and that does not yet support vSphere 7.0. The latest version of VMware Workstation (15.5.6) includes ovftool 4.4 which supports vSphere 7.0.
So please update your VMware Workstation installation to the latest build and retry.
Moderator: Thread moved to the OFV Tool area.
Thank you Andres, I will try that solution.