fix: copy request context.

middlewares/accesslog/logger.go

@@ -104,7 +104,11 @@ func openAccessLogFile(filePath string) (*os.File, error) {
 // GetLogDataTable gets the request context object that contains logging data.
 // This creates data as the request passes through the middleware chain.
 func GetLogDataTable(req *http.Request) *LogData {
-	return req.Context().Value(DataTableKey).(*LogData)
+	if ld, ok := req.Context().Value(DataTableKey).(*LogData); ok {
+		return ld
+	}
+	log.Errorf("%s is nil", DataTableKey)
+	return &LogData{Core: make(CoreLogData)}
 }
 
 func (l *LogHandler) ServeHTTP(rw http.ResponseWriter, req *http.Request, next http.HandlerFunc) {

middlewares/errorpages/error_pages.go

@@ -99,7 +99,8 @@ func (h *Handler) ServeHTTP(w http.ResponseWriter, req *http.Request, next http.
 			utils.CopyHeaders(pageReq.Header, req.Header)
 			utils.CopyHeaders(w.Header(), recorder.Header())
 			w.WriteHeader(recorder.GetCode())
-			h.backendHandler.ServeHTTP(w, pageReq)
+
+			h.backendHandler.ServeHTTP(w, pageReq.WithContext(req.Context()))
 			return
 		}
 	}