Upgrading Tactic VM

[listy]

Hi,

I am new to Tactic. Trying it out for our small production.
I have installed Tactic VM with Fedora 30, it has version 4.7.
I am getting couple of errors, like, (i) I can't update the Template Project with I click the Update Icon; (ii) in Manage Security > Project Security > when I click save button after assigning projects to user group I get error "name 'basestring' is not defined". I have tried this in 2-3 different projects but doesn't resolve.

As a solution, please let me know,
(i) how can I resolve this bug in the given version 4.7 (I am a very beginner in Python)
(ii) how can I upgrade Tactic version to 4.8, in which these bugs might have been resolved. I have referred to System Administration doc for Upgrading Tactic but it doesn't point to right Tactic install dir.

Thanks,
Tushar

Looks like a Python3 bug.
Updating to newer version is really simple. You can search it in forums.
Basically just replace older one with new tactic, and run upgrade_db.py before start