Merge pull request #14268 from influxdata/invalid_compilation_500

fix(http): invalid compilation should not be 500 error

http/query_handler.go

@@ -165,7 +165,6 @@ func (h *FluxHandler) handleQuery(w http.ResponseWriter, r *http.Request) {
 		if cw.Count() == 0 {
 			// Only record the error headers IFF nothing has been written to w.
 			err := &influxdb.Error{
-				Code: influxdb.EInternal,
 				Msg: "failed to execute query against proxy service",
 				Op:  op,
 				Err: err,