Transaction

[Error Code: 1101] cadence runtime error Execution failed:
  --> de7dfa737beed0b9781ca2ec10b6e1e16d43b6a6667d9cc33b4d6dd5a710c55f:28:28
   |
28 |                             self.modifierRef.markAttendance(currentNFT: self.currentNFT, attendance: "true")    
   |                             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

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