Transaction

[Error Code: 1101] cadence runtime error Execution failed:
  --> d0ffd2c7dd2a2d3ef6cdd45b0a8e1c5842778f2bb0eefa24410e0b5ddb55fed4:28:28
   |
28 |                             self.modifierRef.markAttendance(currentNFT: self.currentNFT, attendance: "true")    
   |                             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

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