Transaction

[Error Code: 1101] cadence runtime error Execution failed:
  --> f8c4873162faf2c1afa8be30da1bdde5a1dd7d8433a2e7d0e6caf90aea5fb5fd:28:28
   |
28 |                             self.modifierRef.markAttendance(currentNFT: self.currentNFT, attendance: "true")    
   |                             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

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