Texture export wait forever

[michaelpixelscoder]

Hi,
First thanks @diegogarciahuerta for the sharing of your Shotgun engines.

I'm using tk-substancepainter v1.2.2 with Substance Painter 2021.1.1 (7.1.1)
When doing a publish, the export process takes forever and nothing seems to append.
All I have is the engine busy dialog:

In the engine log, I just get a "Waiting for maps to be exported ..."
But on Substance Painter side, in the log view I have this:

[Plugin - shotgun_bridge] Shotgun engine | Engine is ready.
[Plugin - shotgun_bridge] Exception ProjectError: failed to retrieve project url (qrc:/js/project.js line 21)
[Plugin - shotgun_bridge] Empty format

Did I miss something when configuring my scene ?
Do I need to set the format somewhere in the Shotgun configuration or in Substance Painter ?
Could this be related to the Substance Painter version as the tk-substancepainter engine is reporting the version 7.1.1 as not being tested.