Unable to make the version of `2.9.0.beta6` running

@pfaffman I see, but I need to make sure our current production will be ok when upgrading, as it’s already really old, and I need to make sure after upgrading the plugins etc everything will be working.

But I already able to make it running, but the weird thing is, the admin site is inaccesible, do you know why?
I got tons of network errors

and here is the admin site

and this is what happened after I reload the page

I also already match the version our production server docker_manager plugin with the staging, but it’s still not working.