IllegalStateException에러

java.lang.IllegalStateException: No primary or single unique constructor found for class [Lcom.example.entity.PosterEntity;
at org.springframework.beans.BeanUtils.getResolvableConstructor(BeanUtils.java:267) ~[spring-beans-5.3.18.jar:5.3.18]
at org.springframework.web.method.annotation.ModelAttributeMethodProcessor.createAttribute(ModelAttributeMethodProcessor.java:219) ~[spring-web-5.3.18.jar:5.3.18]

@request로 받아오는 값들이 겹친경우에 발생한다.
@modelattribute를 쓰고 또 @requestParam으로 file을 받아와서 에러가 발생
modelattribute를 삭제후 해결