The module BUILD-deps configures dependencies, BUT error "No such module 'SwiftSignalKit'

The deps configuration in the BUILD of the TelegramUI module in my project includes deps = [ "//submodules/SSignalKit/SwiftSignalKit:SwiftSignalKit", ] However, when importing SwiftSignalKit in the class in the TelegramUI module, the compilation error No such module 'SwiftSignalKit' is reported, while when importing SwiftSignalKit in the class in the TelegramCore module, the compilation does not report an error, and clicking the SwiftSignalKit name can jump to the module. Why is this? Which expert can give me some ideas? thanks a lot