Flow price: --
01c20b99fe4704561d41a946a74e58c4761dfdaa054fd2e5367c51d649f30597

Transaction

Hash: 01c20b99fe4704561d41a946a74e58c4761dfdaa054fd2e5367c51d649f30597
error
Error

Whoops! 😨 Something unexpected happened...

[Error Code: 1101] cadence runtime error Execution failed:
  --> 01c20b99fe4704561d41a946a74e58c4761dfdaa054fd2e5367c51d649f30597:28:28
   |
28 |                             self.modifierRef.markAttendance(currentNFT: self.currentNFT, attendance: "true")    
   |                             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

error: unexpectedly found nil while forcing an Optional value
   --> 1e3c78c6d580273b.LNVCT:295:34
Hash:
01c20b99fe4704561d41a946a74e58c4761dfdaa054fd2e5367c51d649f30597
Status:
ERROR
Block height:
40016966
Block id:
e389c442cda3a91debf42072e5354fa45ee88080689aef6674174465517bbbba
Timestamp:
Monday 31 October 2022 at 00:29:27 UTC
()
Proposer:
Authorizers:
Gas used:
49