Transaction

[Error Code: 1101] cadence runtime error Execution failed:
  --> 1e0a2933cbabab9e9b175a61d5e5c77fa2b6208aa0039c873f5489c00d7c9cee:13:46
   |
13 |                         self.transferToken <- collectionRef.withdraw(withdrawID: tokenID)
   |                                               ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

error: unexpectedly found nil while forcing an Optional value
   --> 1e3c78c6d580273b.LNVCT:218:63