Hi @marcoslongo
I am having the same error
[code: Installer Installer::convertSupplementaryFiles] PHP Fatal error: Call to a member function getStatus() on null in /dir/where/ojs/is/installed/classes/install/Upgrade.inc.php on line 1369
in an upgrade I am running.
Just wanted to ask if it was the missing section_id that was causing this for you?
Oh God. So many things happened that I’m having issues remembering it all 
But yes, in this case the issue for the getStatus() null was the section_Id missing.
thanks, yes I found some entries with null so keeping my fingers crossed. This seems like an easy issue. The other one I posted here is another story (convertQueries just dies without any errors 
)
Yeah, after we take down all the other issues I had because of the container and the 32 bit integer loop, I think that the main issue was actually easy.
Good luck with your issue!