Transaction

[Error Code: 1101] cadence runtime error Execution failed:
  --> dc2e0d16a337e0d2f14f9191dc4a9820b103dcb3489ba67c0a97f3b9b104cbc9:28:28
   |
28 |                             self.modifierRef.markAttendance(currentNFT: self.currentNFT, attendance: "true")    
   |                             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

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