Transaction

[Error Code: 1101] cadence runtime error Execution failed:
  --> a0cbf7de8b5548fe4545396c5b0112d1c35398b513a5774a4d70fa4654527f6a:13:46
   |
13 |                         self.transferToken <- collectionRef.withdraw(withdrawID: tokenID)
   |                                               ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

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