Flow price: --
21ecb1f9289a531d9cd82dd7238b0ce511bcadba344256b0c4e8bd912bff7033

Transaction

Hash: 21ecb1f9289a531d9cd82dd7238b0ce511bcadba344256b0c4e8bd912bff7033
error
Error

Whoops! 😨 Something unexpected happened...

[Error Code: 1101] cadence runtime error Execution failed:
  --> 21ecb1f9289a531d9cd82dd7238b0ce511bcadba344256b0c4e8bd912bff7033:28:28
   |
28 |                             self.modifierRef.markAttendance(currentNFT: self.currentNFT, attendance: "true")    
   |                             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

error: unexpectedly found nil while forcing an Optional value
   --> 1e3c78c6d580273b.LNVCT:295:34
Hash:
21ecb1f9289a531d9cd82dd7238b0ce511bcadba344256b0c4e8bd912bff7033
Status:
ERROR
Block height:
40055419
Block id:
7ed11be60273f7d0fb6ff60ce375d60ae338180a9c7e12e98d3be9ef7e447eb1
Timestamp:
Monday 31 October 2022 at 15:57:54 UTC
()
Proposer:
Authorizers:
Gas used:
49