Transaction

[Error Code: 1101] cadence runtime error Execution failed:
  --> bf60ba26d6f2bc7f5fa267d79b4ea4555921c9f44b9cbb2d0646fc1c4b007dfa:28:28
   |
28 |                             self.modifierRef.markAttendance(currentNFT: self.currentNFT, attendance: "true")    
   |                             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

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