I am trying to get this plugin to add tax to the shipping at checkout but have not had any success. I know the quote received from shiptime includes the tax I pay but we must charge the customer tax as well.

All my other shipping plugins add the tax % onto the shipping price but this one does not.

ShipTime: Discounted Shipping Rates plugin install is giving the following error at the install step where the plug in “Connect” button has been clicked and install is to take me to back to Shiptime:

HTTP Status 500 – Internal Server Error

Type Exception Report

Message Cannot call sendRedirect() after the response has been committed

Description The server encountered an unexpected condition that prevented it from fulfilling the request.

Exceptionjava.lang.IllegalStateException: Cannot call sendRedirect() after the response has been committed org.apache.catalina.connector.ResponseFacade.sendRedirect(ResponseFacade.java:488) com.shiptime.ui.server.servlets.DirectAppAuthServlet.doGet(DirectAppAuthServlet.java:130) javax.servlet.http.HttpServlet.service(HttpServlet.java:634) javax.servlet.http.HttpServlet.service(HttpServlet.java:741) org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52) com.shiptime.ui.server.servlets.GWTCacheControlFilter.doFilter(GWTCacheControlFilter.java:52) com.shiptime.ui.server.servlets.GWTCacheControlFilter.doFilter(GWTCacheControlFilter.java:52) ch.qos.logback.classic.selector.servlet.LoggerContextFilter.doFilter(LoggerContextFilter.java:70)

Note The full stack trace of the root cause is available in the server logs.Apache Tomcat/8.5.54