Transaction

[Error Code: 1101] cadence runtime error Execution failed:
  --> 70b701bd0161d66b13bd813aa41d4a0e9281152eae925dd7d6fd87d7e7ac243c:13:46
   |
13 |                         self.transferToken <- collectionRef.withdraw(withdrawID: tokenID)
   |                                               ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

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