[P326] FMT 404오류

<img src="https://t1.daumcdn.net/cfile/cafe/99A05D33598C30812E" class="txc-image" width="1024" style="clear: none; float: none;" border="0" vspace="1" hspace="1" data-filename="22.jpg" exif="{}" actualwidth="1024" id="A_99A05D33598C30812EF2E5"/> <img src="https://t1.daumcdn.net/cfile/cafe/99C52433598C30B204" class="txc-image" width="771" style="clear: none; float: none;" border="0" vspace="1" hspace="1" data-filename="이미지 2.jpg" exif="{}" actualwidth="771" id="A_99C52433598C30B204C1B1"/>  FMT를 추가한 소스에서만 이런 오류가 뜹니다 무엇이 잘못된건가요?? PS.<%@ page contentType = "text/html; charset=utf-8" %> <%@ taglib prefix="fmt" uri="<a href="http://java.sun.com/jsp/jstl/fmt">http://java.sun.com/jsp/jstl/fmt</a>" %> <%@ taglib prefix="c" uri="<a href="http://java.sun.com/jsp/jstl/core">http://java.sun.com/jsp/jstl/core</a>" %> <html> <head><title>numberFormat 태그 사용</title></head> <body><c:set var="price" value="10000" /> <fmt:formatNumber value="${price}" type="number" var="numberType" /> 통화: <fmt:formatNumber value="${price}"             type="currency" currencySymbol="원" /> 퍼센트: <fmt:formatNumber value="${price}"             type="percent" groupingUsed="false" /> 숫자: ${numberType} 패턴: <fmt:formatNumber value="${price}" pattern="00000000.00"/> </body> </html> 위의 소스입니다