In the TR_m4_IL_Savrethkey quest when I save the Khajiit from the cave, I use the key to release all of the slaves on Savrethi Distillery and bring the key to Rojanna. She thanks me and gives me a new quest. About investigating the death of Mario Stulti. When I complete the investigation, kill the Orc and arrest the daughter of the governor, I can't submit the quest to Rojanna. The dialogue goes in loop.

When looking in the CS, the SlaveKey quest doesn't have a journal index for the outcome when the PC takes the key to Rojanna. Only the ones where you return the key to the slaves' owner.