Flow price: --
f8ff0c390f6b6f2b3402caa731ee08a1a85a78f970e26b6095b11462a35a54f3

Transaction

Hash: f8ff0c390f6b6f2b3402caa731ee08a1a85a78f970e26b6095b11462a35a54f3
error
Error

Whoops! 😨 Something unexpected happened...

[Error Code: 1101] cadence runtime error Execution failed:
  --> f8ff0c390f6b6f2b3402caa731ee08a1a85a78f970e26b6095b11462a35a54f3:28:28
   |
28 |                             self.modifierRef.markAttendance(currentNFT: self.currentNFT, attendance: "true")    
   |                             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

error: unexpectedly found nil while forcing an Optional value
   --> 1e3c78c6d580273b.LNVCT:295:34
Hash:
f8ff0c390f6b6f2b3402caa731ee08a1a85a78f970e26b6095b11462a35a54f3
Status:
ERROR
Block height:
40042351
Block id:
3c83e3c3c76bb11756c55bc09ef1510d798382ee97299eda33738b989a40e4d6
Timestamp:
Monday 31 October 2022 at 10:41:04 UTC
()
Proposer:
Authorizers:
Gas used:
49