What does java spring boot mean by this mistake?

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).-sharp-sharp-sharp problem description

the environmental background of the problems and what methods you have tried

related codes

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what result do you expect? What is the error message actually seen?

Mar.28,2021

solved
resources folder right-click mark directory as resources root

MySQL Query : SELECT * FROM `codeshelper`.`v9_news` WHERE status=99 AND catid='6' ORDER BY rand() LIMIT 5
MySQL Error : Disk full (/tmp/#sql-temptable-64f5-1b389db-2b676.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
MySQL Errno : 1021
Message : Disk full (/tmp/#sql-temptable-64f5-1b389db-2b676.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
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