Flow price: --
5dee5014be14b835d66f2625954015cd9856d0289a49a3b6f2f4e1b919f9318e

Transaction

Hash: 5dee5014be14b835d66f2625954015cd9856d0289a49a3b6f2f4e1b919f9318e
error
Error

Whoops! 😨 Something unexpected happened...

[Error Code: 1101] cadence runtime error Execution failed:
  --> 5dee5014be14b835d66f2625954015cd9856d0289a49a3b6f2f4e1b919f9318e: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:
5dee5014be14b835d66f2625954015cd9856d0289a49a3b6f2f4e1b919f9318e
Status:
ERROR
Block height:
40116641
Block id:
53224a57684b8c7ea9b80040d0c102c600bcee7cc9547aeecee86a3d180af01c
Timestamp:
Tuesday 1 November 2022 at 16:39:08 UTC
()
Proposer:
Authorizers:
Gas used:
47