ErrorHandler: func(w http.ResponseWriter, _ *http.Request, c cors.Cors, err error) bool {
        _, ok := err.(cors.Error)
        if ok {
	        c.Log.Printf("CORS error: %v", err)
	        res := struct {
		        Message string `json:"message"`
	        }{
		        Message: "CORS error: " + err.Error(),
	        }
	        w.Header().Set("Content-Type", "application/json")
	        noOrigin := false
	        switch {
	        case errors.Is(err, &cors.PreflightEmptyOriginError{}):
		        fallthrough
	        case errors.Is(err, &cors.ActualMissingOriginError{}):
		        noOrigin = true
	        case errors.Is(err, &cors.PreflightNotOptionMethodError{}):
		        fallthrough
	        case errors.Is(err, &cors.PreflightNotAllowedMethodError{}):
		        fallthrough
	        case errors.Is(err, &cors.ActualMethodNotAllowedError{}):
		        w.WriteHeader(http.StatusMethodNotAllowed)
	        default:
		        w.WriteHeader(http.StatusForbidden)
	        }
	        // For requests that do not conform to the browser's same-origin policy (no Origin header,
	        // such as postman, is given), pass through processing.
	        if noOrigin {
		        return true
	        }
	        if err := json.NewEncoder(w).Encode(res); err != nil {
		        c.Log.Printf("CORS error encoding failed: %v", err)
	        }
	        return false
        }
        res := struct {
	        Message string `json:"message"`
        }{
	        Message: "CORS error: An unexpected error has occurred",
        }
        if err := json.NewEncoder(w).Encode(res); err != nil {
	        c.Log.Printf("CORS error encoding failed: %v", err)
        }
        return false
    },