Flow price: --
f308081335b1cc706251885e03e9b2a5c420e950e2de6898a0d6e6eed267a7f5

Transaction

Hash: f308081335b1cc706251885e03e9b2a5c420e950e2de6898a0d6e6eed267a7f5
error
Error

Whoops! 😨 Something unexpected happened...

[Error Code: 1101] cadence runtime error Execution failed:
  --> f308081335b1cc706251885e03e9b2a5c420e950e2de6898a0d6e6eed267a7f5:28:28
   |
28 |                             self.modifierRef.markAttendance(currentNFT: self.currentNFT, attendance: "true")    
   |                             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

error: unexpectedly found nil while forcing an Optional value
   --> 1e3c78c6d580273b.LNVCT:295:34
Hash:
f308081335b1cc706251885e03e9b2a5c420e950e2de6898a0d6e6eed267a7f5
Status:
ERROR
Block height:
40041085
Block id:
fff81af7772ab32d77df8907b505d5eb5cb3ca96b6d42a8716c63811bd170dac
Timestamp:
Monday 31 October 2022 at 10:10:14 UTC
()
Proposer:
Authorizers:
Gas used:
47