[service] Conan v2 pipeline fails with "Invalid JSON String" error

[Woazim]

What is your problem/feature request?

I try to update the recipe for imagl. It is widely inspired from working recipes of other packages. But for this one, I have a not helping "Invalid JSON String" error from @conan-center-bot with no log.

Is it possible to have a more helping message from CI? (a raw log, or something that can be used to understand what's wrong.)

Thank you in advance.

[uilianries]

There is a print in the recipe causing trouble when capturing the output to generate the JSON file. Removing the print fixes the situation.