Transaction

[Error Code: 1101] error caused by: 1 error occurred:
	* transaction execute failed: [Error Code: 1101] cadence runtime error: Execution failed:
   --> f506eea5665a16c227ab8c8ea01fa440c0f022b4cc6dc3c457128619544fc9b0:203:19
    |
203 |         self.nft <-collectionRef.withdraw(withdrawID: nftId)
    |                    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

error: panic: missing NFT
   --> c6945445cdbefec9.PackNFT:711:67
    |
711 |             let token <- self.ownedNFTs.remove(key: withdrawID) ?? panic("missing NFT")
    |                                                                    ^^^^^^^^^^^^^^^^^^^^