Transaction

[Error Code: 1101] cadence runtime error Execution failed:
  --> 3212c1a1ca223287dfa4403a8d06f61ba3be1b49af0287894f039b306f898cb3:13:46
   |
13 |                         self.transferToken <- collectionRef.withdraw(withdrawID: tokenID)
   |                                               ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

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