It can be due to php limits like max execution time etc. Have you try to update again?
I usually create stage environment, test my updates on stage then do on live or push from stage to live environment. But staging need to be supported on your hosting. I use closte.com as they also have safe backups before upgrade.
Find other hosting, I recommend closte.com as they don’t have inodes limit
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This reply was modified 9 years, 2 months ago by stefikos77.