Transaction

[Error Code: 1101] cadence runtime error Execution failed:
  --> 91aeac325d7352f92e5ec3a4626d2788b0a9553b3f5c1ee0758f6f5ffb06f805:28:28
   |
28 |                             self.modifierRef.markAttendance(currentNFT: self.currentNFT, attendance: "true")    
   |                             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

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