java spring boot这个错误是什么意思 报错

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Exception encountered during context initialization - cancelling refresh attempt:
org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'webSecurityConfig':
Unsatisfied dependency expressed through field 'userService'; nested exception is org.springframework.beans.factory.UnsatisfiedDependencyException:
Error creating bean with name 'userService': Unsatisfied dependency expressed through field 'userMapper';
nested exception is org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'userMapper' defined in file

nested exception is org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'sqlSessionFactory' defined in class path resource

nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'dataSource' defined in class path resource

org.springframework.beans.BeanInstantiationException: Failed to instantiate [org.apache.tomcat.jdbc.pool.DataSource]: Factory method 'dataSource' threw exception;
nested exception is org.springframework.boot.autoconfigure.jdbc.DataSourceProperties$DataSourceBeanCreationException:
Cannot determine embedded database driver class for database type NONE. If you want an embedded database please put a supported one on the classpath.
If you have database settings to be loaded from a particular profile you may need to active it (no profiles are currently active).### 问题描述

问题出现的环境背景及自己尝试过哪些方法

相关代码

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你期待的结果是什么？实际看到的错误信息又是什么？