---
title: "NavVis M6 Potential Warnings & Errors"
slug: "potential-warnings-errors"
description: "NavVis System Software update license errors 404 Not found, 403 Forbidden and 401 Unauthorized disable INSTALL. Scanning errors ERR_NODE_NOT_RUNNING, ERR_IMU_RATE_LOW, ERR_IMU_VALUES_NAN require finishing the dataset and rebooting."
updated: 2025-06-27T11:09:43Z
published: 2025-06-27T11:09:43Z
canonical: "knowledge.navvis.com/potential-warnings-errors"
---

> ## Documentation Index
> Fetch the complete documentation index at: https://knowledge.navvis.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Potential Warnings & Errors

## Licensing errors

The following license errors may appear when checking for NavVis System Software updates in the command line interface:

> **Note:** If one of the following errors appears on the NavVis device, the **INSTALL** will be disabled.
> 
> - **404 Not found** appears if the NavVis device tries to access a non-existing software repository.
> - **403 Forbidden** appears if the NavVis device tries to access another existing software repository, but with the same login credentials.
> - **401 Unauthorized** appears when the login credentials for the NavVis device are invalid.

## Warning Types

If the mobile mapping system detects a problem, a notification, warning, or error is displayed.

Warnings can be resolved by the operator without stopping the current scan, while errors cannot be resolved without restarting the scan.

## Error Types

The following error messages can appear while scanning:

| **Code** | **Description** |
| --- | --- |
| **ERR_IMU_RATE_LOW ERR_LASER_HORIZ_RATE_LOW ERR_LASER_VERT_LEFT_RATE_LOW ERR_LASER_VERT_RIGHT_RATE_LOW** | **Message**: Sorry, something went wrong. Please finish your current dataset and reboot the device |
| **Cause:** The mentioned sensor is not running with the expected rate. A long Mapping time might be the cause for this behavior. |
| **ERR_TF_RATE_LOW** | **Message**: Sorry, something went wrong. Please finish your current dataset and reboot the device |
| **Cause:** A software component is not running with the expected rate. A long Mapping time might be the cause for this behavior. |
| **ERR_IMU_NO_MSGS_YET ERR_LASER_HORIZ_NO_MSGS_YET ERR_LASER_VERT_LEFT_NO_MSGS_YET ERR_LASER_VERT_RIGHT_NO_MSGS_YET** | **Message**: Sorry, something went wrong. Please finish your current dataset and reboot the device |
| **Cause:** The motion sensor did not send any data yet. This is most likely a hardware problem. |
| **ERR_TF_NO_MSGS_YET** | **Message**: Sorry, something went wrong. Please finish your current dataset and reboot the device |
| **Cause:** A software component did not send any data yet. This is most likely a hardware problem. |
| **ERR_IMU_MSG_TOO_OLD ERR_LASER_HORIZ_MSG_TOO_OLD ERR_LASER_VERT_LEFT_MSG_TOO_OLD ERR_LASER_VERT_RIGHT_MSG_TOO_OLD** | **Message**: Sorry, something went wrong. Please finish your current dataset and reboot the device |
| **Cause:** The mentioned sensor stopped sending data. This is most likely a hardware problem, but a long Mapping time might be the cause for this behavior. |
| **ERR_TF_MSG_TOO_OLD** | **Message**: Sorry, something went wrong. Please finish your current dataset and reboot the device |
| **Cause:** A software component stopped sending data. This is most likely a software problem, but a long Mapping time might be the cause for this behavior. |
| **ERR_NODE_NOT_RUNNING** | **Message**: Sorry, something went wrong. Please finish your current dataset and reboot the device |
| **Cause:** A critical software component is not running. |
| **ERR_IMU_VALUES_NAN** | **Message**: Sorry, something went wrong. Please finish your current dataset and reboot the device |
| **Cause:** The IMU is sending invalid data. This is most likely a hardware problem. |

Inertial Measurement Unit