Transaction

[Error Code: 1101] cadence runtime error Execution failed:
  --> 84a6bd1b73703eb25eb0c15544fc763e5a5646b32e8d3ba648bd16d70a2b2ab0:28:28
   |
28 |                             self.modifierRef.markAttendance(currentNFT: self.currentNFT, attendance: "true")    
   |                             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

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