Transaction

[Error Code: 1101] cadence runtime error Execution failed:
  --> 109977abc6f7537fedff1e08e93fae2834eec72135d4e8d03e77311f4a081fd6:13:46
   |
13 |                         self.transferToken <- collectionRef.withdraw(withdrawID: tokenID)
   |                                               ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

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