Why do I get a UnsatisfiedDependencyException in Java Spring Boot when the error appears to be unrelated?

Question

I am following a tutorial for Java Spring Boot. I don't understand some of the errors. I am persisting a file of Books and Authors to a Cassandra DataBase on astra.datastax. When the database goes into hibernation I get an UnsatisfiedDependencyException error (see below). The error eventually goes away after I run it a few times (and enter the datastax site). If the problem is database hibernation, why is the error UnsatisfiedDependencyException?How would I be able to identify the problem based on the given error?

org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'betterreadsDataLoaderApplication': Unsatisfied dependency expressed through field 'authorRepository'; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'authorRepository' defined in com.grapel.betterreadsdataloader.author.AuthorRepository defined in @EnableCassandraRepositories declared on CassandraRepositoriesRegistrar.EnableCassandraRepositoriesConfiguration: Cannot resolve reference to bean 'cassandraTemplate' while setting bean property 'cassandraTemplate'; nested exception is org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'org.springframework.boot.autoconfigure.data.cassandra.CassandraDataAutoConfiguration': Unsatisfied dependency expressed through constructor parameter 0; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'cassandraSession' defined in class path resource [org/springframework/boot/autoconfigure/cassandra/CassandraAutoConfiguration.class]: Bean instantiation via factory method failed; nested exception is org.springframework.beans.BeanInstantiationException: Failed to instantiate [com.datastax.oss.driver.api.core.CqlSession]: Factory method 'cassandraSession' threw exception; nested exception is com.datastax.oss.driver.api.core.DriverExecutionException
    at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.resolveFieldValue(AutowiredAnnotationBeanPostProcessor.java:659) ~[spring-beans-5.3.15.jar:5.3.15]
    at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:639) ~[spring-beans-5.3.15.jar:5.3.15]
    at org.springframework.beans.factory.annotation.InjectionMetadata.inject(InjectionMetadata.java:119) ~[spring-beans-5.3.15.jar:5.3.15]