Trouble completing the FEA simulation due to some connector issue

I have been trying to run FEA simulation on an active aero wing design of a car. I have directly imported the CAD from Onshape. I know that its slightly poor but I have no other option but to use the same design.

Whenever I click on simulations, it throws two errors ( I have attached my project link) about some connectors not connected or about some part not being detected.

I am trying to solve this problem from a long time now, so I would really appreciate your input or assistance.

Thank you

https://www.simscale.com/workbench/?pid=4547104841922103757&location=simulation:cd58dd3d-695d-4ea7-9214-6cd8ea34fb44&ps=analysis%2Fconnectors%2F0