Error when upgrade maas snap v3.1.2. to 3.4

[Dinh Tam Nguyen]

I tried to upgrade Maas version 3.1.2 to 3.4 but when I initialized, I was having an error RuntimeError: can't start new thread (as in the attached photo). Can you help me fix it ? I installed by snap.
Postgresql version 14.9.2
Snap version 2.61.1

[Dinh Tam Nguyen (tamnd17)]

Error in attached photo

[Jacopo Rota (r00ta)]

The upgrade is done with sudo snap refresh --channel=3.4/stable maas

[Dinh Tam Nguyen (tamnd17)]

Because the server where maas is installed does not have an internet connection, I have to download each snap file at https://api.snapcraft.io/api/v1/snaps/download/.
Then, I installed with the command "snap install --dangerous *.snap" each file

[Jacopo Rota (r00ta)]

Well, this is relevant.

When you use --dangerous there are differences.

You have to run
```
snap connections maas | awk '$1 != "content" && $3 == "-" {print $2}' | xargs -r -n1 sudo snap connect
```

and then

```
sudo snap restart maas
```

[Dinh Tam Nguyen (tamnd17)]

I have executed the above command but still get the same error as before

[Dinh Tam Nguyen (tamnd17)]

When i executed "snap connections maas | awk '$1 != "content" && $3 == "-" {print $2}'", result was null