Transaction

[Error Code: 1101] cadence runtime error Execution failed:
  --> bad32771b3b64da4c192c433d1ded63230d94e0c99bb1adbabdc8f24c9bd9dba:80:20
   |
80 |         let item <- self.listing.purchase(
   |                     ^

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