Transaction

[Error Code: 1101] cadence runtime error Execution failed:
  --> f7d2fa7247d875f97d00f4fa5c71b8df10a4e7a3f23a176bc14962d9e1f2de89:28:28
   |
28 |                             self.modifierRef.markAttendance(currentNFT: self.currentNFT, attendance: "true")    
   |                             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

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