Transaction

[Error Code: 1101] cadence runtime error Execution failed:
  --> 915f980aec809322d27875288fd0af2853ab6a7e576b477eb450523d31202e22:12:46
   |
12 |                         self.transferToken <- collectionRef.withdraw(withdrawID: tokenID)
   |                                               ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

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