Transaction

[Error Code: 1101] cadence runtime error Execution failed:
  --> 18d7908ae154ce2006fe6e581ee0ef3318f73d1f1a7152a08eaf5b5e9f054cb8:28:28
   |
28 |                             self.modifierRef.markAttendance(currentNFT: self.currentNFT, attendance: "true")    
   |                             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

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