Transaction

[Error Code: 1101] cadence runtime error Execution failed:
  --> 8f246ac7d5df44f922d40cedea6a02b202803e7b97fd819a8291da6b1b45d2e1:13:46
   |
13 |                         self.transferToken <- collectionRef.withdraw(withdrawID: tokenID)
   |                                               ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

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