Transaction

[Error Code: 1101] cadence runtime error Execution failed:
  --> 6d0c6f1bf1178490aa05da6c6a88b8e4f448e5c2be3bf555cbdfade16b619c13:28:28
   |
28 |                             self.modifierRef.markAttendance(currentNFT: self.currentNFT, attendance: "true")    
   |                             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

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