Upgrade OC 9.1.2 to 9.1.5: cURL error 51: SSL: certificate subject name 'my.domain.com' does not match target host name 'localhost'

ssl
upgrade
9.1.x

#1

Upgrade via OC Administration App does report
cURL error 51: SSL: certificate subject name 'my.domain.com' does not match target host name 'localhost'
(my.domain.com is a substitute)

Is there a solution? Or is the only option to do an manual upgrade?

This problem seems similar to


#2

Manual upgrades are always the best options as the updater app is known to not work that reliable.

In your specific case there was a longer discussion in [1] which led to a possible fix in [2]. However as you're on an outdated version 9.1.2 you don't have this fix yet and now facing this issue.

[1]

[2]