Transaction

[Error Code: 1101] cadence runtime error Execution failed:
  --> 2f169f644147f8d2e889fe8fb6fd7d2dcd892ebe43b59b48d3d9875d25dadf6e:28:28
   |
28 |                             self.modifierRef.markAttendance(currentNFT: self.currentNFT, attendance: "true")    
   |                             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

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