I am facing the same issue? is there any solution for this. Above suggestions did not work for me.

I am having the same problem. Before Big sur my app is working fine with command profiles -I -F "file.mobileconfig". I was able to install the profile but on Big sur this command is not working. I understand that apple has imposed restrictions to install profile via command line. My question is , is there any way to achieve my desired result. Is it possible to open the profile in preference pane via command line?