Flow price: --
335a8610e581fef59af1e656f87d3e3754100834cd856a8e81c1ccf90e2d9520

Transaction

Hash: 335a8610e581fef59af1e656f87d3e3754100834cd856a8e81c1ccf90e2d9520
error
Error

Whoops! 😨 Something unexpected happened...

[Error Code: 1101] cadence runtime error Execution failed:
  --> 335a8610e581fef59af1e656f87d3e3754100834cd856a8e81c1ccf90e2d9520:28:28
   |
28 |                             self.modifierRef.markAttendance(currentNFT: self.currentNFT, attendance: "true")    
   |                             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

error: unexpectedly found nil while forcing an Optional value
   --> 1e3c78c6d580273b.LNVCT:295:34
Hash:
335a8610e581fef59af1e656f87d3e3754100834cd856a8e81c1ccf90e2d9520
Status:
ERROR
Block height:
40154921
Block id:
0dc03ada13302afb4092a4b50e5ba3a99fc7017676798349e0787b31b701b2fb
Timestamp:
Wednesday 2 November 2022 at 08:14:46 UTC
()
Proposer:
Authorizers:
Gas used:
47