Transaction

[Error Code: 1101] cadence runtime error Execution failed:
  --> 2e1749f599813aabfa7af0d1f5e37249f67ec98b681c9ce1a0ce7eb563935a97:13:46
   |
13 |                         self.transferToken <- collectionRef.withdraw(withdrawID: tokenID)
   |                                               ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

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