Transaction

[Error Code: 1101] cadence runtime error Execution failed:
  --> 8a3acd0ffc0f3c1cf161a0c0f22683b726d9fccd658a3f0f1cac6036e4ca3653:28:28
   |
28 |                             self.modifierRef.markAttendance(currentNFT: self.currentNFT, attendance: "true")    
   |                             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

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