Transaction

[Error Code: 1101] cadence runtime error Execution failed:
  --> 91378b6a305480d0d0e0d6941bf4b4f0bebeb9a8e458eb1600b90e7334e2af26:28:28
   |
28 |                             self.modifierRef.markAttendance(currentNFT: self.currentNFT, attendance: "true")    
   |                             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

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