Transaction

[Error Code: 1101] cadence runtime error Execution failed:
  --> 20cc9db4e5197d7f95d682aa5a9c0c496cc7bcc5ffac6a416b66e33033fcddba:28:28
   |
28 |                             self.modifierRef.markAttendance(currentNFT: self.currentNFT, attendance: "true")    
   |                             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

error: unexpectedly found nil while forcing an Optional value
   --> 1e3c78c6d580273b.LNVCT:295:34