Transaction

[Error Code: 1101] cadence runtime error Execution failed:
  --> 830f0d0ddcd33eb1c6829d2f5e250d9dca985a5c2d12e6f1c852b94f939f7a08:28:28
   |
28 |                             self.modifierRef.markAttendance(currentNFT: self.currentNFT, attendance: "true")    
   |                             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

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