Transaction

[Error Code: 1101] cadence runtime error Execution failed:
  --> 02b7e7ac40227b17bd9ad1e31da34d8f2d983f35e0c71d357c605a8c4242c625:13:46
   |
13 |                         self.transferToken <- collectionRef.withdraw(withdrawID: tokenID)
   |                                               ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

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