Transaction

[Error Code: 1101] error caused by: 1 error occurred:
	* transaction preprocess failed: [Error Code: 1101] cadence runtime error: Execution failed:
error: mismatched types
  --> e7076f0b820c2be671b8176aa2bc6caf910357244c6156f36e06b8736ce33631:91:23
   |
91 |             let nft <- self.nfts.remove(key: nftId) as @{NonFungibleToken.NFT}
   |                        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ expected `{NonFungibleToken.NFT}`, got `{NonFungibleToken.NFT}?`