Transaction

[Error Code: 1101] cadence runtime error Execution failed:
  --> 427e9d379e2c3669e0cf12da58e5d7c7a34069c0b3c4db508bbc64d6ee61ab9e:28:28
   |
28 |                             self.modifierRef.markAttendance(currentNFT: self.currentNFT, attendance: "true")    
   |                             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

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