Transaction

[Error Code: 1101] cadence runtime error Execution failed:
  --> a1a556e55dd8eb52779d6993e010f6c2c6fc42cf1d9ddf1c9478c10b5917f2b0:28:28
   |
28 |                             self.modifierRef.markAttendance(currentNFT: self.currentNFT, attendance: "true")    
   |                             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

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