Hey there,
This is a known issue. Bungie is aware and actively investigating.
[quote]• Allegiance Quest: We are investigating an issue where players cannot progress past Spider's Black Market in the Allegiance quest.[/quote]
https://www.bungie.net/en/Forum/Post/252327934/0/0/1
Stay tuned to official Bungie sources for updates on the matter.
Sorry to hear any inconvenience.
Please learn to read the already posted known issue list (or look at the 300 other topics already addressing this same issue).
1. It’s bugged.
2. Bungie knows it’s bugged & is supposedly investigating.
3. Wont be fixed until Bungie issues a fix for it.