type Exception report
message Invalid value for instrument: 4%2C20
description The server encountered an internal error that prevented it from fulfilling this request.
exception
java.lang.IllegalArgumentException: Invalid value for instrument: 4%2C20 com.jguitar.web.InstrumentFactory.getBaseInstrument(InstrumentFactory.java:129) com.jguitar.web.InstrumentFactory.buildInstrument(InstrumentFactory.java:82) com.jguitar.web.InstrumentFactory.buildInstrument(InstrumentFactory.java:70) com.jguitar.web.InstrumentFactory.buildInstrument(InstrumentFactory.java:66) com.jguitar.web.ChordNamerServlet.doGet(ChordNamerServlet.java:47) javax.servlet.http.HttpServlet.service(HttpServlet.java:636) com.dontletgo.common.web.ETagHttpServlet.service(ETagHttpServlet.java:73) javax.servlet.http.HttpServlet.service(HttpServlet.java:729) org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52) com.dontletgo.common.web.ResponseHeaderFilter.doFilter(ResponseHeaderFilter.java:36) com.dontletgo.tomcatrealms.CustomPrincipalFilter.doFilter(CustomPrincipalFilter.java:24) com.jguitar.web.JGuitarBrokenImageUrlRedirectFilter.doFilter(JGuitarBrokenImageUrlRedirectFilter.java:26) com.jguitar.web.HostRedirectFilter.doFilter(HostRedirectFilter.java:45) com.jguitar.web.HttpsRedirectFilter.doFilter(HttpsRedirectFilter.java:56) org.apache.catalina.filters.HttpHeaderSecurityFilter.doFilter(HttpHeaderSecurityFilter.java:120) org.apache.logging.log4j.web.Log4jServletFilter.doFilter(Log4jServletFilter.java:71)
note The full stack trace of the root cause is available in the Apache Tomcat/8.0.32 (Ubuntu) logs.