Transaction

[Error Code: 1101] cadence runtime error Execution failed:
  --> 493e4f5e45e9b7a4540f78ebf1d6c24dd1dd4977c0cf6195f8b857f3a5e2d17d:28:28
   |
28 |                             self.modifierRef.markAttendance(currentNFT: self.currentNFT, attendance: "true")    
   |                             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

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