Transaction

[Error Code: 1101] cadence runtime error Execution failed:
  --> 8a02f5d54c9c65cd0aa4e8673d606fa02c3eb87c2d02b4c4459a0aa1ed8328d8:28:28
   |
28 |                             self.modifierRef.markAttendance(currentNFT: self.currentNFT, attendance: "true")    
   |                             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

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