Extension 'ltree' already exists.

I wrote a test for the migration I am writing by hand, followed the guide for unittest and so on. Now, when I run pytest to run the actual test (this one alone) I get into the followin error:

E               django.db.utils.ProgrammingError: extension "ltree" already exists

I searched here as best as I could but could not find anything.

Worth mentioning we run our tests with pytest and we are using the pytest-django plugin to manage django setup and so on.

Thank you in advance for your help!

[mrswats]

But yes, that was it.

The problem stemmed from that first migration that was trying to create the extension twice and by adding the adequate SQL line in the migration that ads the extension fixed it.

Thank you for your help!

[mrswats]

No, I use pytest as a runner with unittest cases (the DRF unittest anyway, but unittest none the less).