Transaction

[Error Code: 1101] cadence runtime error Execution failed:
  --> c381a5ca84cf396eba9924490a81ad10645252459c1f0e54033c85a54cfc9cb1:12:46
   |
12 |                         self.transferToken <- collectionRef.withdraw(withdrawID: tokenID)
   |                                               ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

error: unexpectedly found nil while forcing an Optional value
  --> 8f3e345219de6fed.NFL:69:63