EasypoiDictServiceI cannot be resolved to a type

xilele

[org.springframework.web.context.support.XmlWebApplicationContext:489] Exception encountered during context initialization - cancelling refresh attempt
org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'easypoiDictService' defined in file [D:\tomcat\webapps\jeecg\WEB-INF\classes\org\jeecgframework\easypoi\service\EasypoiDictService.class]: Instantiation of bean failed; nested exception is org.springframework.beans.BeanInstantiationException: Could not instantiate bean class [org.jeecgframework.easypoi.service.EasypoiDictService]: Constructor threw exception; nested exception is java.lang.Error: Unresolved compilation problem:
        EasypoiDictServiceI cannot be resolved to a type
Caused by: org.springframework.beans.BeanInstantiationException: Could not instantiate bean class [org.jeecgframework.easypoi.service.EasypoiDictService]: Constructor threw exception; nested exception is java.lang.Error: Unresolved compilation problem:
        EasypoiDictServiceI cannot be resolved to a type

        at org.springframework.beans.BeanUtils.instantiateClass(BeanUtils.java:164)
        at org.springframework.beans.factory.support.SimpleInstantiationStrategy.instantiate(SimpleInstantiationStrategy.java:89)
        at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.instantiateBean(AbstractAutowireCapableBeanFactory.java:1070)
        ... 26 more
Caused by: java.lang.Error: Unresolved compilation problem:
        EasypoiDictServiceI cannot be resolved to a type

        at org.jeecgframework.easypoi.service.EasypoiDictService.<init>(EasypoiDictService.java:21)
        at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
        at sun.reflect.NativeConstructorAccessorImpl.newInstance(Unknown Source)
        at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(Unknown Source)
        at java.lang.reflect.Constructor.newInstance(Unknown Source)
        at org.springframework.beans.BeanUtils.instantiateClass(BeanUtils.java:148)
        ... 28 more

请大佬，指点一下，究竟是哪里的问题导致，应该修改哪里？才能消除。