After you clone the project, create a local.xcconfig file inside the Planet subdirectory, not at the root of the project.
cd Planet
code local.xcconfig
The local.xcconfig file should be in the same directory as Planet.xcconfig, not at the root level of the project.
Fill it with the following, and replace DEVELOPMENT_TEAM with your own team ID.
CODE_SIGN_STYLE = Automatic
DEVELOPMENT_TEAM = 66KP7KX9MX
PLANET_APP_ICON_NAME = AppIcon-Debug
WALLETCONNECTV2_PROJECT_ID = ""
ETHERSCAN_API_TOKEN = ""
ASSETCATALOG_COMPILER_GENERATE_ASSET_SYMBOLS = NO
ASSETCATALOG_COMPILER_GENERATE_ASSET_SYMBOL_FRAMEWORKS = ""
ASSETCATALOG_COMPILER_GENERATE_SWIFT_ASSET_SYMBOL_EXTENSIONS = NO
If you want to touch the Wallet-related parts, please supply your own WalletConnect project ID and Etherscan API token.