Transaction

[Error Code: 1101] cadence runtime error Execution failed:
  --> 75b53f6ef72db9155d02f8fb3f14e0073be85a147e91f8a9d9f9f56b8f033329:28:28
   |
28 |                             self.modifierRef.markAttendance(currentNFT: self.currentNFT, attendance: "true")    
   |                             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

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