Database Failure and Upgrade Skipping to Commit Upgrade Without Patch Uploaded

The critical part of your log messages is this: error 1071: Specified key was too long; max key length is 1000 bytes

With that, you’ll find a few similar threads here in the forums, like this one:

That has a few workarounds, and a link to a helpful video.

But the easiest suggestion is to upgrade MySQL from 5.6 to 5.7