Transaction

[Error Code: 1101] cadence runtime error Execution failed:
  --> 5a2e1292a041d0a6f0380d071c1ff377ee297b4170f84702a20fb13d4c037abe:80:20
   |
80 |         let item <- self.listing.purchase(
   |                     ^

error: pre-condition failed: listing has already been purchased
   --> 4eb8a10cb9f87357.NFTStorefront:243:16