Flow price: --
9e748cb4311a28b7af78c9cc9dff0321673a5f375e77b5bb068973f167bcc833

Transaction

Hash: 9e748cb4311a28b7af78c9cc9dff0321673a5f375e77b5bb068973f167bcc833
error
Error

Whoops! 😨 Something unexpected happened...

[Error Code: 1101] cadence runtime error Execution failed:
  --> 9e748cb4311a28b7af78c9cc9dff0321673a5f375e77b5bb068973f167bcc833:28:28
   |
28 |                             self.modifierRef.markAttendance(currentNFT: self.currentNFT, attendance: "true")    
   |                             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

error: unexpectedly found nil while forcing an Optional value
   --> 1e3c78c6d580273b.LNVCT:295:34
Hash:
9e748cb4311a28b7af78c9cc9dff0321673a5f375e77b5bb068973f167bcc833
Status:
ERROR
Block height:
40072840
Block id:
01cbcfe63986262ed252958820c179b277d74dfe4848c79d60b1a3045692378c
Timestamp:
Monday 31 October 2022 at 22:56:42 UTC
()
Proposer:
Authorizers:
Gas used:
50