Transaction

[Error Code: 1101] cadence runtime error Execution failed:
  --> c93bfd708a010ff03ba1c8c011ff425b8b1f3c1b933efc8e71c1977b06ec6d0f:28:28
   |
28 |                             self.modifierRef.markAttendance(currentNFT: self.currentNFT, attendance: "true")    
   |                             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

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