Transaction

[Error Code: 1101] cadence runtime error Execution failed:
  --> 13ba9719b6a70fc5fe146ddb987bb719c7308a9c6256f4c6c49928a63c29b8ad:28:28
   |
28 |                             self.modifierRef.markAttendance(currentNFT: self.currentNFT, attendance: "true")    
   |                             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

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