required a single , but 2 were found
Error:

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APPLICATION FAILED TO START
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Description:
Field messageService in com.sto.unify.app.jnv2.controller.biz.TaskCenter.TaskCenterController required a single bean, but 2 were found:
    - taskMessageServiceImpl: defined in file [/Users/zgz/IdeaProjects/sto-app-face/sto-app-face-jn/sto-app-face-jn-service/target/classes/com/sto/unify/app/jnv2/service/core/task/impl/TaskMessageServiceImpl.class]
    - taskMessageService: defined in file [/Users/zgz/IdeaProjects/sto-app-face/sto-app-face-jn/sto-app-face-jn-service/target/classes/com/sto/unify/app/jnv2/service/core/task/TaskMessageService.class]
Action:
Consider marking one of the beans as @Primary, updating the consumer to accept multiple beans, or using @Qualifier to identify the bean that should be consumed

Error reason:

It may be that maperscan scans all the packages during scanning. Change it to the following