What's the possible reason for "Kinematic analysis failed in time step 0 : Position analysis is not completed"?

Hi, I build a mode of the human-exoskeleton system. However, it shows "Kinematic analysis failed in time step 0: Position analysis is not completed". Could you tell me the possible reason for this? Thank you!

Best,
TJ

Unfortunately, it is really hard to list all the reasons this could happen. If you have created a system with lots of closed loops it is not always trivial to find the problem.

We would need your model to understand what is going on.

In general I would recommend building your model in small incremental steps.

Hi, here is my model in AnyBody system. Could you please give me some hints? Thank you!
BenchPressTest (1).zip (505.5 KB)

Best,
TJ

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