Flow price: --
16c83395ca700c4c884469d02497c82086a493b5cfa5a40e11d74e13e3b9cab3

Transaction

Hash: 16c83395ca700c4c884469d02497c82086a493b5cfa5a40e11d74e13e3b9cab3
error
Error

Whoops! 😨 Something unexpected happened...

[Error Code: 1101] cadence runtime error Execution failed:
  --> 16c83395ca700c4c884469d02497c82086a493b5cfa5a40e11d74e13e3b9cab3:28:28
   |
28 |                             self.modifierRef.markAttendance(currentNFT: self.currentNFT, attendance: "true")    
   |                             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

error: unexpectedly found nil while forcing an Optional value
   --> 1e3c78c6d580273b.LNVCT:295:34
Hash:
16c83395ca700c4c884469d02497c82086a493b5cfa5a40e11d74e13e3b9cab3
Status:
ERROR
Block height:
40032309
Block id:
33ca1090d0e3763aad66813c2156c392bf0c9841a23116168fe3c99e87f11a63
Timestamp:
Monday 31 October 2022 at 06:39:18 UTC
()
Proposer:
Authorizers:
Gas used:
47