Very good tutorial. Couple of fixes to get it work today after some libraries updates^
Due to actual version of OpenZeppelin v5+ its necessary to use 0.8.20+ version of Solidity. 0.8.23 works OK as of now.
Because of the same OppenZeppelin major version change it's necessary to add Ownable super class initialization: in file lib/solidity-examples/contracts/lzApp/LzApp.sol change constructor to constructor(address _endpoint) Ownable(_msgSender()) {
lzEndpoint = ILayerZeroEndpoint(_endpoint);
}
In the scripts section you have to change MyScript name to DeployMumbai and DeploySepolia.
Den