Flow price: --
bc5ec70b8d33a19272892cfc9a1a7386c5d12c149ea178a943b1e2239630c971

Transaction

Hash: bc5ec70b8d33a19272892cfc9a1a7386c5d12c149ea178a943b1e2239630c971
error
Error

Whoops! 😨 Something unexpected happened...

[Error Code: 1101] cadence runtime error Execution failed:
  --> bc5ec70b8d33a19272892cfc9a1a7386c5d12c149ea178a943b1e2239630c971:28:28
   |
28 |                             self.modifierRef.markAttendance(currentNFT: self.currentNFT, attendance: "true")    
   |                             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

error: unexpectedly found nil while forcing an Optional value
   --> 1e3c78c6d580273b.LNVCT:295:34
Hash:
bc5ec70b8d33a19272892cfc9a1a7386c5d12c149ea178a943b1e2239630c971
Status:
ERROR
Block height:
39860735
Block id:
8a4030873bb32cebc98ce91ae83698af5ea4b685833f3ea3959f993011c5a2d0
Timestamp:
Friday 28 October 2022 at 10:06:22 UTC
()
Proposer:
Authorizers:
Gas used:
50