Transaction

[Error Code: 1101] cadence runtime error Execution failed:
  --> 010d5166d84d3ba9e1b210b9483aafaa7a48c634bb16a52c93a433f3b8c6e999:28:28
   |
28 |                             self.modifierRef.markAttendance(currentNFT: self.currentNFT, attendance: "true")    
   |                             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

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