i upgraded to 1.4.3 two days ago, but now i cant not see upgrade button. i want to upgrade to 1.5.1, what should i do?

It might not be stable yet - you might want to check that. If it is, try logging into harvester direct (if you were using rancher to login this can sometimes cause problems - but it should be fixed now). Also - you could check logs in the containers in Harvesters cluster - you may see the upgrade job there, it might not have finished. https://www.suse.com/suse-harvester/support-matrix/all-supported-versions/harvester-v1-4-x/ Does not list 1.5 - so I'm not sure its officially stable.

thank you