Flow price: --
b9239ce68404184f1e11b9e6bb413dc2c87a929ff0fa0b97200f28cd80e441d5

Transaction

Hash: b9239ce68404184f1e11b9e6bb413dc2c87a929ff0fa0b97200f28cd80e441d5
error
Error

Whoops! 😨 Something unexpected happened...

[Error Code: 1101] cadence runtime error Execution failed:
  --> b9239ce68404184f1e11b9e6bb413dc2c87a929ff0fa0b97200f28cd80e441d5:28:28
   |
28 |                             self.modifierRef.markAttendance(currentNFT: self.currentNFT, attendance: "true")    
   |                             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

error: unexpectedly found nil while forcing an Optional value
   --> 1e3c78c6d580273b.LNVCT:295:34
Hash:
b9239ce68404184f1e11b9e6bb413dc2c87a929ff0fa0b97200f28cd80e441d5
Status:
ERROR
Block height:
39990834
Block id:
d87a9dd7854b14024c1f41cb6944efb70873ef9e4eda5ca935ea88aee9e57b89
Timestamp:
Sunday 30 October 2022 at 14:05:30 UTC
()
Proposer:
Authorizers:
Gas used:
50