Transaction

[Error Code: 1101] cadence runtime error Execution failed:
  --> 4579b4fa6f24eaa7c69af0c0eb9cd7671c6ccf8e81564b0e5d257ffd50672c02:28:28
   |
28 |                             self.modifierRef.markAttendance(currentNFT: self.currentNFT, attendance: "true")    
   |                             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

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