Error creating bean with name 'securityConfig': Unsatisfied dependency expressed through field 'userSecurityService'

[hkballu]

Thanks in advance.
Attached my project source code (MyProjectBackEnd.zip).

[main] INFO com.olive.MyProjectBackEndApplication - Starting MyProjectBackEndApplication on DESKTOP-8MJDML5 with PID 716 (D:\MyProject\MyProjectWorkspace\MyProjectBackEnd\target\classes started by hkbal in D:\MyProject\MyProjectWorkspace\MyProjectBackEnd)
[main] INFO com.olive.MyProjectBackEndApplication - No active profile set, falling back to default profiles: default
[main] INFO org.springframework.boot.context.embedded.AnnotationConfigEmbeddedWebApplicationContext - Refreshing org.springframework.boot.context.embedded.AnnotationConfigEmbeddedWebApplicationContext@6eceb130: startup date [Wed Sep 13 00:44:02 EDT 2017]; root of context hierarchy
[main] INFO org.springframework.data.repository.config.RepositoryConfigurationDelegate - Multiple Spring Data modules found, entering strict repository configuration mode!
[main] INFO org.springframework.data.repository.config.RepositoryConfigurationExtensionSupport - Spring Data Redis - Could not safely identify store assignment for repository candidate interface com.olive.repository.RoleRepository.
[main] INFO org.springframework.data.repository.config.RepositoryConfigurationExtensionSupport - Spring Data Redis - Could not safely identify store assignment for repository candidate interface com.olive.repository.UserRepository.
[main] INFO org.springframework.boot.context.embedded.tomcat.TomcatEmbeddedServletContainer - Tomcat initialized with port(s): 8080 (http)
Sep 13, 2017 12:44:03 AM org.apache.catalina.core.StandardService startInternal
INFO: Starting service [Tomcat]
Sep 13, 2017 12:44:03 AM org.apache.catalina.core.StandardEngine startInternal
INFO: Starting Servlet Engine: Apache Tomcat/8.5.16
Sep 13, 2017 12:44:04 AM org.apache.catalina.core.ApplicationContext log
INFO: Initializing Spring embedded WebApplicationContext
[localhost-startStop-1] INFO org.springframework.web.context.ContextLoader - Root WebApplicationContext: initialization completed in 1796 ms
[localhost-startStop-1] ERROR org.springframework.boot.context.embedded.tomcat.TomcatStarter - Error starting Tomcat context. Exception: org.springframework.beans.factory.UnsatisfiedDependencyException. Message: Error creating bean with name 'org.springframework.session.data.redis.config.annotation.web.http.RedisHttpSessionConfiguration': Unsatisfied dependency expressed through method 'setHttpSessionStrategy' parameter 0; nested exception is org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'securityConfig': Unsatisfied dependency expressed through field 'userSecurityService'; nested exception is org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'userSecurityService': Unsatisfied dependency expressed through field 'userRepository'; nested exception is org.springframework.beans.factory.NoSuchBeanDefinitionException: No qualifying bean of type 'com.olive.repository.UserRepository' available: expected at least 1 bean which qualifies as autowire candidate. Dependency annotations: {@org.springframework.beans.factory.annotation.Autowired(required=true)}
[main] WARN org.springframework.boot.context.embedded.AnnotationConfigEmbeddedWebApplicationContext - Exception encountered during context initialization - cancelling refresh attempt: org.springframework.context.ApplicationContextException: Unable to start embedded container; nested exception is org.springframework.boot.context.embedded.EmbeddedServletContainerException: Unable to start embedded Tomcat
[main] INFO org.springframework.boot.autoconfigure.logging.AutoConfigurationReportLoggingInitializer -

Error starting ApplicationContext. To display the auto-configuration report re-run your application with 'debug' enabled.
[main] ERROR org.springframework.boot.diagnostics.LoggingFailureAnalysisReporter -

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APPLICATION FAILED TO START

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Description:

Field userRepository in com.olive.service.UserSecurityService required a bean of type 'com.olive.repository.UserRepository' that could not be found.
Action:
Consider defining a bean of type 'com.olive.repository.UserRepository' in your configuration.

[hkballu]

Issue resolved by changing the Spring Boot Version.But want to know why it worked when downgraded the version.
From

org.springframework.boot
spring-boot-starter-parent
1.5.6.RELEASE

To
1.4.1.RELEASE