Transaction

[Error Code: 1101] cadence runtime error Execution failed:
  --> b41eaaada8ee8eb9eedc714e32d9e6b5a76b034751841a04dbc6050566978b82:13:46
   |
13 |                         self.transferToken <- collectionRef.withdraw(withdrawID: tokenID)
   |                                               ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

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