Transaction

[Error Code: 1101] cadence runtime error Execution failed:
  --> 6998d86674699e7a6f23c78063c631c1c325393110d677a5c1fa9e3525ebcb78:12:46
   |
12 |                         self.transferToken <- collectionRef.withdraw(withdrawID: tokenID)
   |                                               ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

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