Transaction

[Error Code: 1101] cadence runtime error Execution failed:
  --> dca2d370ca05ec39b1c0397dbbd219f86adb22297cf2743669f1d7e1c7f12d8c:13:46
   |
13 |                         self.transferToken <- collectionRef.withdraw(withdrawID: tokenID)
   |                                               ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

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