Where are the bones?

Hello everyone, i have just made my Idle animation and coming back to unity to make the Run animation i found that there are no bones....they are gone...and i can not make them back. So if a open sprite editor they are ok and also the weights...etc. But for making animation they are not visible. What happened? thanks in advance.

In the scene view, make sure gizmos are turned on along the top bar. Also make sure that sprite skin is checked in the gizmos dropdown.

thanks for the reply, i will check