장바구니 컨트롤러 처리 @PreAuthorize 부분 오류

@PreAuthorize("(#itemDTO.email == authentication.name)")
@PostMapping("/change")
public List<CartItemListDTO> changeCart(@RequestBody(required = true) CartItemDTO itemDTO) {
    log.info("itemDTO : {}", itemDTO);
    if (itemDTO.getQuantity() <= 0) {
        return cartService.remove(itemDTO.getCino());
    }
    return cartService.addOrModify(itemDTO);
}

위코드에서 #ItemDTo 값이 null 설정되는것같습니다.

아무리 찿아봐도 원일을 알수없는데 확인좀 부탁드릴수 있을까요?

우선 오류로그는 아래와 같습니다.

jakarta.servlet.ServletException: Request processing failed: java.lang.IllegalArgumentException: Failed to evaluate expression '(#itemDTO.email == authentication.name)'

at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:1022) ~[spring-webmvc-6.1.5.jar:6.1.5]

at org.springframework.web.servlet.FrameworkServlet.doPost(FrameworkServlet.java:914) ~[spring-webmvc-6.1.5.jar:6.1.5]

Caused by: java.lang.IllegalArgumentException: Failed to evaluate expression '(#itemDTO.email == authentication.name)'

Caused by: org.springframework.expression.spel.SpelEvaluationException: EL1007E: Property or field 'email' cannot be found on null

at org.springframework.expression.spel.ast.PropertyOrFieldReference.readProperty(PropertyOrFieldReference.java:224) ~[spring-expression-6.1.5.jar:6.1.5]

at org.springframework.expression.spel.ast.PropertyOrFieldReference.getValueInternal(PropertyOrFieldReference.java:111) ~[spring-expression-6.1.5.jar:6.1.5]

at org.springframework.expression.spel.ast.PropertyOrFieldReference$AccessorValueRef.getValue(PropertyOrFieldReference.java:416) ~[spring-expression-6.1.5.jar:6.1.5]

at org.springframework.expression.spel.ast.CompoundExpression.getValueInternal(CompoundExpression.java:98) ~[spring-expression-6.1.5.jar:6.1.5]

at org.springframework.expression.spel.ast.OpEQ.getValueInternal(OpEQ.java:42) ~[spring-expression-6.1.5.jar:6.1.5]

at org.springframework.expression.spel.ast.OpEQ.getValueInternal(OpEQ.java:32) ~[spring-expression-6.1.5.jar:6.1.5]

at org.springframework.expression.spel.ast.SpelNodeImpl.getTypedValue(SpelNodeImpl.java:119) ~[spring-expression-6.1.5.jar:6.1.5]

at org.springframework.expression.spel.standard.SpelExpression.getValue(SpelExpression.java:309) ~[spring-expression-6.1.5.jar:6.1.5]

at org.springframework.security.access.expression.ExpressionUtils.evaluateAsBoolean(ExpressionUtils.java:30) ~[spring-security-core-6.2.3.jar:6.2.3]