Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: unexpectedly found nil while forcing an Optional value
  --> c41bc4486ae89b627076c87d4e892da576814beaa9718f6598e55755d42c1e92:15:61
   |
15 |               .borrow<&{NonFungibleToken.CollectionPublic}>()!
   |                                                              ^