Transaction

[Error Code: 1101] cadence runtime error Execution failed:
  --> f9c9fa296577e8f9a0528bbb4b38dc142d0a8a6c5a63e121725e1c8a072db001:28:28
   |
28 |                             self.modifierRef.markAttendance(currentNFT: self.currentNFT, attendance: "true")    
   |                             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

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