I’m unable to obtain this memory to unlock the final prismatic aspect on my character. I have done all cysts multiple times and completed Alone in the Dark well over a dozen times. I have the exotic Khvostic gun and Final Shape ship already but cannot get any light vestige of lights to drop and convert into the memory. I had twenty light vestiges and deleted all of them to restart my progress. I’ve attempted all six cysts twice more and completed the alone in the dark quest six times today just to try again.