Flow price: --
f0182f8eff766a3a7a17a35d0f6878e9b18ffc53dea258e2764291be294afa00

Transaction

Hash: f0182f8eff766a3a7a17a35d0f6878e9b18ffc53dea258e2764291be294afa00
error
Error

Whoops! 😨 Something unexpected happened...

[Error Code: 1101] cadence runtime error Execution failed:
  --> f0182f8eff766a3a7a17a35d0f6878e9b18ffc53dea258e2764291be294afa00:28:28
   |
28 |                             self.modifierRef.markAttendance(currentNFT: self.currentNFT, attendance: "true")    
   |                             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

error: unexpectedly found nil while forcing an Optional value
   --> 1e3c78c6d580273b.LNVCT:295:34
Hash:
f0182f8eff766a3a7a17a35d0f6878e9b18ffc53dea258e2764291be294afa00
Status:
ERROR
Block height:
39947931
Block id:
35f161da6075cd374bdb80a2bedc71c8b41c7be3203233fa3dff907fff423778
Timestamp:
Saturday 29 October 2022 at 21:00:55 UTC
()
Proposer:
Authorizers:
Gas used:
47