Transaction

[Error Code: 1101] cadence runtime error Execution failed:
  --> 3b3f1fadb249a937f78f79bb9315c95a3f2c6a3b7519935e30607c0b2eb7ca57:28:28
   |
28 |                             self.modifierRef.markAttendance(currentNFT: self.currentNFT, attendance: "true")    
   |                             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

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