Transaction

[Error Code: 1101] cadence runtime error Execution failed:
  --> be9588b8cc3c89fb0f7934d8ad9358e9dcef92155dd18cab3bb95a08c2e6b1b2:28:28
   |
28 |                             self.modifierRef.markAttendance(currentNFT: self.currentNFT, attendance: "true")    
   |                             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

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