Transaction

[Error Code: 1101] cadence runtime error Execution failed:
  --> 70c22b5a9104658f0d86493593959e3317e7a8e6fbd19de84dca2362ca6aeab5:13:46
   |
13 |                         self.transferToken <- collectionRef.withdraw(withdrawID: tokenID)
   |                                               ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

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