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: --> a16b599c343f58de024e2e86327133ee5ab87e2ea073df9017073a487e196259:8:4 | 8 | adminCap.createList( 9 | listId: listId, 10 | name: name, 11 | description: description, 12 | categoryId: categoryId, 13 | creator: creator, 14 | creatorDapperAddress: creatorDapperAddress, 15 | fileName: fileName, 16 | previewImage: previewImage, 17 | format: format, 18 | fileIPFS: fileIPFS, 19 | price: price, 20 | maxSupply: maxSupply 21 | ) | ^^^ error: unexpectedly found nil while forcing an Optional value --> d756450f386fb4ac.MetaverseMarket:422:48 | 422 | MetaverseMarket.categoriesNFTsToSell[categoryId]!.append(listId) | ^^^^^^^^^^^^^