Does anyone know a fix for the glitch that affects the dark brotherhood quests, it prevents nazir from issuing you any contracts during the whispers in the dark quest thus preventing the main db quest line from continuing. I find it frustrating that Bethesda hasn't resolved this after numerous updates and it being 2 years since I had this problem. Has anyone else encountered the same bug and feels its annoying that there's no fix for the console version of this otherwise damn great game.

I don't know if that helps you proceeding with the quest any further...

When Astrid tells you to go talk to Nazir for more side contracts, Nazir may not have any quest options available.

This is possibly caused by the targets from Nazir's next contract having already been killed.

This can be fixed by deactivating the quest while inside of the Sanctuary, exiting to the outside, and reactivating the quest.

Proceed to follow through with the quest as normal and the bug should be fixed.