[ERROR] ValueError: Object type PartialFixedProjectiveConstraint<> was not created

[accuracy-maker]

Hi Community,

I am a beginner of Sofa. Recently I just set up the sofa which inlcudes SofaPython3, Softrobots and BeamAdapter. (most of them are v22.06 or lower) I knew It's pretty old but it's working (I have tried many versions and they are not working for some reasons). when I run the examples in softrobots doc (specially examples/thematicalDocs/T4-DirectActuation/DriveTheRobot/Simulation.py), I met the Error as follow:
[ERROR] [SofaPython3::SceneLoader] Unable to completely load the scene from file 'examples/thematicalDocs/T4-DirectActuation/DriveTheRobot/Simulation.py'. Python exception: ValueError: Object type PartialFixedProjectiveConstraint<> was not created The object is not in the factory.

Does that mean my softrobots install incorrectly or others dependencies are wrong. what should I do to check and fix the bug.

In addition, I want to know what's the stablest version of sofa right now. I usually work with sofapython3, softrobots, beamadapter, softrobot.inverse.

Thanks for your time and help.

kind regards,

[alxbilger]

Hi,

PartialFixedProjectiveConstraint has been introduced in #4302, therefore since the release v24.06. Before, it had another name PartialFixedConstraint. So try this component name instead.

Check that your plugins follow the same version than SOFA. If you run a scene that uses PartialFixedProjectiveConstraint, it indicates that the plugin has a newer version than SOFA.

If you want to upgrade, the latest version is v25.12: https://www.sofa-framework.org/download/. All the plugins you mentioned have a compatibility with this version and are shipped with it.

Cheers,