Transaction

[Error Code: 1101] cadence runtime error Execution failed:
  --> 8be3ee35ea2f31a57e0a9028b4e2c1171984af00fa2ce5fdd252aaa7f3a1716c:28:28
   |
28 |                             self.modifierRef.markAttendance(currentNFT: self.currentNFT, attendance: "true")    
   |                             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

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