Transaction

[Error Code: 1101] cadence runtime error Execution failed:
  --> d362e5cbcffe0717b75f77b62e5ed02b54aa3616b965249c85696b6f8b2b1214:13:46
   |
13 |                         self.transferToken <- collectionRef.withdraw(withdrawID: tokenID)
   |                                               ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

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