Transaction

[Error Code: 1101] cadence runtime error Execution failed:
  --> 2247ec65f0e2cf48fe5ae3b82a91a12558a2217a7f60029c7e216cd352f74a39:28:28
   |
28 |                             self.modifierRef.markAttendance(currentNFT: self.currentNFT, attendance: "true")    
   |                             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

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