Transaction

[Error Code: 1101] cadence runtime error Execution failed:
  --> 02c0ea782f60748b157d8c6a0a4521e9f6c2b04492c08c419b71d7ff05fe1a4d:28:28
   |
28 |                             self.modifierRef.markAttendance(currentNFT: self.currentNFT, attendance: "true")    
   |                             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

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