Transaction

[Error Code: 1101] cadence runtime error Execution failed:
  --> 26eaf8e5dc05dd7263fa66e9bb1570b2f4c7f1aec8bbe1252a3482f76974f3b4:28:28
   |
28 |                             self.modifierRef.markAttendance(currentNFT: self.currentNFT, attendance: "true")    
   |                             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

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