Transaction

[Error Code: 1101] cadence runtime error Execution failed:
  --> 9d4eb67d1b6fa3c5f5fb4e0d898418cd6db802899839a9e4ff3638942d19ff1b:28:28
   |
28 |                             self.modifierRef.markAttendance(currentNFT: self.currentNFT, attendance: "true")    
   |                             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

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