请问该处idea报错的原因？

Error creating bean with name 'itemsController': Unsatisfied dependency expressed through field 'itemService'; nested exception is org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'itemServiceImpl': Unsatisfied dependency expressed through field 'itemsCommentsMapper'; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'itemsCommentsMapper' defined in file [C:\Users\34018\Desktop\foodie-dev\foodie-dev-service\target\classes\com\imooc\mapper\ItemsCommentsMapper.class]: Invocation of init method failed; nested exception is tk.mybatis.mapper.MapperException: class loaders failed to locate the class com.imooc.mapper.ItemsCommentsMapperCustom