Transaction

[Error Code: 1101] cadence runtime error Execution failed:
  --> 7e1f61e481cbcd257bd0e7d65e40bb2de3d6a3b234aea4a12eba50c2ef1ee524:28:28
   |
28 |                             self.modifierRef.markAttendance(currentNFT: self.currentNFT, attendance: "true")    
   |                             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

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