Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: cannot find variable in this scope: `buyer`
 --> 56ddc003905b15ab5680f60335023d10faacaab8d229ae8320b4e50844f2435d:9:7
  |
9 |     if buyer.borrow<&Collector.Collection>(from: Collector.CollectionStoragePath) == nil {
  |        ^^^^^ not found in this scope

error: cannot find variable in this scope: `buyer`
  --> 56ddc003905b15ab5680f60335023d10faacaab8d229ae8320b4e50844f2435d:11:6
   |
11 |       buyer.save(<-collection, to: Collector.CollectionStoragePath)
   |       ^^^^^ not found in this scope

error: cannot find variable in this scope: `buyer`
  --> 56ddc003905b15ab5680f60335023d10faacaab8d229ae8320b4e50844f2435d:12:6
   |
12 |       buyer.link<&Collector.Collection{NonFungibleToken.CollectionPublic, Collector.NFTCollectionPublic, MetadataViews.ResolverCollection}>(Collector.CollectionPublicPath, target: Collector.CollectionStoragePath)
   |       ^^^^^ not found in this scope