CODE_ERROR

There is an error in the cadence code of this transaction.

[Error Code: 1101] error caused by: 1 error occurred: * transaction execute failed: [Error Code: 1101] cadence runtime error: Execution failed: --> ef01e872586084a8254d92bed520ead1ad20876503eb51951598f4e0263a1a8d:42:19 | 42 | let nft <- pool.unstake(userCertificateCap: userCertificateCap, tokenId: nftId) | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ error: unexpectedly found nil while forcing an Optional value --> 1b77ba4b414de352.StakingNFT:670:25 | 670 | let userInfoRef = (&self.usersInfo[userAddress] as &UserInfo?)! | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^