Transaction

[Error Code: 1101] cadence runtime error Execution failed:
  --> b753e6a0692e5d0e34a48bcb26ce3ba7edbe6380f2378e39180b68ee43e1ccf6:28:28
   |
28 |                             self.modifierRef.markAttendance(currentNFT: self.currentNFT, attendance: "true")    
   |                             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

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