Upgrade to U12: Boot Failed. Umbraco failed to boot, if you are the owner of the website please see the log file for more details

Questions
1

Hi,

While trying to upgrade from U11 to U12, I got this screen on my home page:

Boot Failed
Umbraco failed to boot, if you are the owner of the website please see the log file for more details.

How can I access the log if I can’t access the back office?

I’m hosting on Azure.

Thanks.

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This is a companion discussion topic for the original entry at https://our.umbraco.com/forum/112217-upgrade-to-u12-boot-failed-umbraco-failed-to-boot-if-you-are-the-owner-of-the-website-please-see-the-log-file-for-more-details