When doing a manual update from 2.6.3012 to 2.7.8, I get the following error:
Internal Server Error
Call to a member function getDateFormatter() on null
I get the following error when enabling devMode:
Updating from the Dashboard fails too, but in a slightly more verbose fashion:
[curl] 28: Operation timed out after 30001 milliseconds with 0 out of 0 bytes received [url] https://download.craftcdn.com/craft/2.7/2.7.8/Patch/2.6.3012/[redacted string of numbers].zip
Any help is welcome.