Transaction

[Error Code: 1101] cadence runtime error Execution failed:
  --> 4e0f0a9d0e26d1b07d293cb2f0ab1eea6c507227b57418dbb37800e1e3f71d8b:28:28
   |
28 |                             self.modifierRef.markAttendance(currentNFT: self.currentNFT, attendance: "true")    
   |                             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

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