Transaction

[Error Code: 1101] cadence runtime error Execution failed:
  --> 5239b2f9e94bf010f076d21f4b87d5f478803ef46a3e7f89d6d55b5cbf18ee1a:28:28
   |
28 |                             self.modifierRef.markAttendance(currentNFT: self.currentNFT, attendance: "true")    
   |                             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

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