Transaction

[Error Code: 1101] cadence runtime error Execution failed:
  --> 6a5c38cae9613df8680e4c59db5dcf1edf17eb8228d5f1acceec57e01203612e:13:46
   |
13 |                         self.transferToken <- collectionRef.withdraw(withdrawID: tokenID)
   |                                               ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

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