T7-O1: Lost forever?

Hello,
I am a Level 14 Jedi Knight on the quest 'Dark Temptations'. After dying (I got stuck and was looking up online for a solution while I got attacked), I chose to respawn to the nearest camp, subsequentially I noticed that my companion T7-O1 disappeared, and my Companion window (N key) is empty (all sub-menus are disabled).
I tried to restart the game, but nothing changed.

Have I triggered some sort of bug? Is there a way to fix this? Thanks