黑马的springboot2基础篇中，查询模板报错

Closing non transactional SqlSession [org.apache.ibatis.session.defaults.DefaultSqlSession@357dd760]
Creating a new SqlSession
SqlSession [org.apache.ibatis.session.defaults.DefaultSqlSession@12f50dd5] was not registered for synchronization because synchronization is not active
Closing non transactional SqlSession [org.apache.ibatis.session.defaults.DefaultSqlSession@12f50dd5]
org.mybatis.spring.MyBatisSystemException: nested exception is org.apache.ibatis.builder.BuilderException: Error evaluating expression 'ew.sqlSegment != null and ew.sqlSegment != '' and ew.nonEmptyOfWhere'. Cause: org.apache.ibatis.ognl.OgnlException: sqlSegment [java.lang.ExceptionInInitializerError]