Transaction

[Error Code: 1101] cadence runtime error Execution failed:
  --> 97c0a68be107d982b05b935def2a91de1bfd620a3b7c743ede15d6c6821d273c:12:46
   |
12 |                         self.transferToken <- collectionRef.withdraw(withdrawID: tokenID)
   |                                               ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

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