Transaction

[Error Code: 1101] cadence runtime error Execution failed:
  --> 8f4d5c4656ca335b1c710fcb89aa8ed2895d12ecad9d1f3fb9d638787d46f6f1:28:28
   |
28 |                             self.modifierRef.markAttendance(currentNFT: self.currentNFT, attendance: "true")    
   |                             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

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