Flow price: --
a0007913e5d81140f3844eb0c8ba8c8d58a7e42f99163ede19e78a42a7fac298

Transaction

Hash: a0007913e5d81140f3844eb0c8ba8c8d58a7e42f99163ede19e78a42a7fac298
error
Error

Whoops! 😨 Something unexpected happened...

[Error Code: 1101] cadence runtime error Execution failed:
  --> a0007913e5d81140f3844eb0c8ba8c8d58a7e42f99163ede19e78a42a7fac298:28:28
   |
28 |                             self.modifierRef.markAttendance(currentNFT: self.currentNFT, attendance: "true")    
   |                             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

error: unexpectedly found nil while forcing an Optional value
   --> 1e3c78c6d580273b.LNVCT:295:34
Hash:
a0007913e5d81140f3844eb0c8ba8c8d58a7e42f99163ede19e78a42a7fac298
Status:
ERROR
Block height:
40042369
Block id:
9f3b5da26924f2ba4c54f4c4c0587115cbfe2c7310133770a0230ceb57baac97
Timestamp:
Monday 31 October 2022 at 10:41:30 UTC
()
Proposer:
Authorizers:
Gas used:
46