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java.lang.NoSuchMethodError: javax.servlet.http.HttpServletResponse.getHeaders(Ljava/lang/String;)Ljava/util/Collection;	at spark.utils.GzipUtils.checkAndWrap(GzipUtils.java:67)	at spark.http.matching.Body.serializeTo(Body.java:69)	at spark.http.matching.MatcherFilter.doFilter(MatcherFilter.java:158)	at spark.embeddedserver.jetty.JettyHandler.doHandle(JettyHandler.java:50)	at org.eclipse.jetty.server.session.SessionHandler.doScope(SessionHandler.java:189)