Flow price: --
a72f42f478a4797b0429bf64569f1b70655237f8f13c971a3b1b534a8ff7bd33

Transaction

Hash: a72f42f478a4797b0429bf64569f1b70655237f8f13c971a3b1b534a8ff7bd33
error
Error

Whoops! 😨 Something unexpected happened...

[Error Code: 1101] cadence runtime error Execution failed:
  --> a72f42f478a4797b0429bf64569f1b70655237f8f13c971a3b1b534a8ff7bd33:28:28
   |
28 |                             self.modifierRef.markAttendance(currentNFT: self.currentNFT, attendance: "true")    
   |                             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

error: unexpectedly found nil while forcing an Optional value
   --> 1e3c78c6d580273b.LNVCT:295:34
Hash:
a72f42f478a4797b0429bf64569f1b70655237f8f13c971a3b1b534a8ff7bd33
Status:
ERROR
Block height:
39952006
Block id:
28bf3db7cf3f208b50fd45d2680ae0515b9fb342c3984010fd32b4a10191829c
Timestamp:
Saturday 29 October 2022 at 22:36:31 UTC
()
Proposer:
Authorizers:
Gas used:
49