# Error in sending trajectory to voxl-vision-px4

Source: https://forum.modalai.com/topic/1150/error-in-sending-trajectory-to-voxl-vision-px4
Category: General Questions (https://forum.modalai.com/category/2/general-questions)
Posted: 2022-07-23 16:07:35 UTC by howard
Replies: 7 · Views: 1607

## howard · 2022-07-23 16:07:35 UTC

hi,
I was trying out voxl-mapper ,when It generates the paths and sends , voxl-vision-px4 throws the following error
```ERROR validating trajectory data received through pipe: read partial packet```
 I tried updating voxl-mapper to v0.0.5 but still no luck , how can I solve this error?

## Reply by howard · 2022-07-25 16:34:26 UTC

I am still stuck with this, can someone help me please
Thank you

## Reply by Guest · 2022-07-25 17:44:35 UTC

Hi,

Could you please post the output of the following command?
```
voxl-inspect-services -v
```

## Reply by howard · 2022-07-25 17:57:43 UTC

Currently I am not in the office, but I remember that the version of voxl mapper was 0.0.5. What could possibly be causing this error? Do I need to update anything?
Thank you

## Reply by Guest · 2022-07-25 17:59:12 UTC (in reply to howard)

@howard I need the version of voxl-vision-px4 as well to determine the problem

## Reply by howard · 2022-07-26 05:04:03 UTC

sorry for the delay,
here is the output of ```voxl-inspect-services -v```
![Screenshot (3).png](https://forum.modalai.com/assets/uploads/files/1658811825959-screenshot-3.png)

## Reply by Guest · 2022-07-26 16:58:29 UTC

So the issue is a mismatch in the data structures used to send the trajectory data. The structures were fixed in voxl-mapper v0.0.5 and voxl-vision-px4 >= v1.0.0.

So you're best bet is to upgrade voxl-vision-px4 which is only currently available on dev

## Reply by howard · 2022-07-26 17:00:04 UTC (in reply to Guest)

@Matthew-Booker will do that, thank you!!