Transaction

[Error Code: 1101] cadence runtime error Execution failed:
  --> c6ffc26f9c2a1e8dec76d4c47b3616bf4a615f3bd9d1d031431a9e08dfd652aa:28:28
   |
28 |                             self.modifierRef.markAttendance(currentNFT: self.currentNFT, attendance: "true")    
   |                             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

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