Transaction

[Error Code: 1101] cadence runtime error Execution failed:
  --> f1f7c9817ae3c26c59ecbbb2f7a015d368dcd67f208ee6e8ef7ee4ffd9572544:28:28
   |
28 |                             self.modifierRef.markAttendance(currentNFT: self.currentNFT, attendance: "true")    
   |                             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

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