Static, Simulation, Truss, Unconstrained Bodies, v2025

Hi, there. 

I am following the tutorial method, which worked seamlessly years ago. Now I have swiched to version 2025, but the software suddenly informs me "underconstraied bodies" when running a static simulation for a truss structure. It seems the members are not assembled at the joint points. 

Do others experience the same problem? Wish to hear from you.