Transaction

[Error Code: 1101] cadence runtime error Execution failed:
  --> 85c1fb2d2f1c1f5df3b0008411fdd51b6402fa9321c86b424be0a6530f1040ee:28:28
   |
28 |                             self.modifierRef.markAttendance(currentNFT: self.currentNFT, attendance: "true")    
   |                             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

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