Flow price: --
568d332d0110e9f5186d91235c17bbea85e1aecf37fc5fe3d6a16daa9e12fe78

Transaction

Hash: 568d332d0110e9f5186d91235c17bbea85e1aecf37fc5fe3d6a16daa9e12fe78
error
Error

Whoops! 😨 Something unexpected happened...

[Error Code: 1101] cadence runtime error Execution failed:
  --> 568d332d0110e9f5186d91235c17bbea85e1aecf37fc5fe3d6a16daa9e12fe78:28:28
   |
28 |                             self.modifierRef.markAttendance(currentNFT: self.currentNFT, attendance: "true")    
   |                             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

error: unexpectedly found nil while forcing an Optional value
   --> 1e3c78c6d580273b.LNVCT:295:34
Hash:
568d332d0110e9f5186d91235c17bbea85e1aecf37fc5fe3d6a16daa9e12fe78
Status:
ERROR
Block height:
40122244
Block id:
b5e0b7628abc68028bbff4eb61bffc1ef63ee8305dcbbb3342dc4eea2b11c6fe
Timestamp:
Tuesday 1 November 2022 at 18:55:33 UTC
()
Proposer:
Authorizers:
Gas used:
48