Hi Tatiana,
Oh, that's strange, and an accident! If you go from the Homepage, you'll see there is no 16.04 documentation listed for 2.6. It looks like the page was removed from the index, but not properly deleted!
While it may be possible to install AtoM using Ubuntu 16.04, AtoM 2.6 will definitely not work with MySQL 5.7. To help address some performance issues when working with large hierarchies, we have made use of the new Common Table Expressions (
CTE) available only in v8.0 and later. These changes will cause issues if older versions of MySQL are used.
Additionally, with 16.04 and earlier versions of PHP (such as 7.0), there will likely be issues with the upgraded password hash algorithm we have used in 2.6. You can try changing the algorithm used from argon2i to PASSWORD_BCRYPT in
config/app.yml but in our initial tests, we found issues with user accounts after doing so - this is why we attempted to remove the 16.04 / PHP 7.0 / MySQL 5.7 documentation from the 2.6 branch.
I apologize for the confusion - we'll properly remove that page soon!