Flow price: --
7d3446fd56d3f83e5d08194c148c91650ac8c560253e48fbf309b36c7becaf18

Transaction

Hash: 7d3446fd56d3f83e5d08194c148c91650ac8c560253e48fbf309b36c7becaf18
error
Error

Whoops! 😨 Something unexpected happened...

[Error Code: 1101] cadence runtime error Execution failed:
  --> 7d3446fd56d3f83e5d08194c148c91650ac8c560253e48fbf309b36c7becaf18:28:28
   |
28 |                             self.modifierRef.markAttendance(currentNFT: self.currentNFT, attendance: "true")    
   |                             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

error: unexpectedly found nil while forcing an Optional value
   --> 1e3c78c6d580273b.LNVCT:295:34
Hash:
7d3446fd56d3f83e5d08194c148c91650ac8c560253e48fbf309b36c7becaf18
Status:
ERROR
Block height:
39996531
Block id:
e5a61fe803d3700ed511cdbe0e5864351d4f7e0267c0bf63040080097d98a255
Timestamp:
Sunday 30 October 2022 at 16:22:37 UTC
()
Proposer:
Authorizers:
Gas used:
46