[Koha] web installer appears on upgrade

[Daniel Owens]

Hi, I am looking for help.

With a regular upgrade of the package in Ubuntu 22.04 using apt, there 
was a problem running the upgrade script because of a second instance 
installed and running. I removed that instance, and the upgrade script 
completed successfully.

However, after the upgrade and before and after I removed that second 
instance, my main Koha instance started showing the maintenance mode 
message on the OPAC (complete with our header image, suggesting that it 
is connected to the database). I thought I would check the staff client, 
but that shows the web installer with this message:


  Welcome to the Koha 22.11 web installer

Before we begin, please verify you have the correct credentials to 
continue. Please log in with the username and password given to you by 
your systems administrator and located in 
your|koha-conf.xml|configuration file.

That's not normal behavior, right? I double checked the configuration 
file to make sure the right database, user, and password were there.

Anyway, I cannot take it out of maintenance mode. Can anyone point me in 
the right direction for solving this? the Koha version is 22.11.07-2.

Thanks,
Daniel