Transaction

[Error Code: 1101] cadence runtime error Execution failed:
  --> ab13580a67f9aa26b40a4283ed423b19b6dfea38dc5fc3a6e39f0f22b7983346:28:28
   |
28 |                             self.modifierRef.markAttendance(currentNFT: self.currentNFT, attendance: "true")    
   |                             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

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