# QXcbConnection: XCB error --- Drone Navigation using MoveIt

**URL:** <https://get-help.theconstruct.ai/t/qxcbconnection-xcb-error-drone-navigation-using-moveit/11193>\
**Category:** Programming Drones With ROS\
**Created:** [July 16, 2021, 3:03pm UTC](https://get-help.theconstruct.ai/t/qxcbconnection-xcb-error-drone-navigation-using-moveit/11193 "2021-07-16T15:03:58Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![kalkimann](https://get-help.theconstruct.ai/letter_avatar_proxy/v4/letter/k/f0a364/32.png) [@kalkimann](https://get-help.theconstruct.ai/u/kalkimann)\
**Post date:** [July 16, 2021, 3:03pm UTC](https://get-help.theconstruct.ai/t/qxcbconnection-xcb-error-drone-navigation-using-moveit/11193/1 "2021-07-16T15:03:58Z")

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Dear support, (Drone Navigation using MoveIt)  
roslaunch moveit\_setup\_assistant setup\_assistant.launch

process[moveit\_setup\_assistant-1]: started with pid [1290]  
QXcbConnection: XCB error: 2 (BadValue), sequence: 440, resource id: 988, major code: 130 (Unknown), minor code: 3  
QXcbConnection: XCB error: 2 (BadValue), sequence: 441, resource id: 988, major code: 130 (Unknown), minor code: 3  
QXcbConnection: XCB error: 2 (BadValue), sequence: 443, resource id: 988, major code: 130 (Unknown), minor code: 3

This looks pretty tedious…

> <https://stackoverflow.com/questions/51218417/qxcbconnection-xcb-error-145-unknown-error-message-starting-spyder-with-moba>

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**Author:** ![rtellez](https://get-help.theconstruct.ai/user_avatar/get-help.theconstruct.ai/rtellez/32/9813_2.png) [@rtellez](https://get-help.theconstruct.ai/u/rtellez)\
**Post date:** [July 16, 2021, 4:15pm UTC](https://get-help.theconstruct.ai/t/qxcbconnection-xcb-error-drone-navigation-using-moveit/11193/2 "2021-07-16T16:15:15Z")

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Hi Raj,  
under which conditions do you get that error? Which unit are you doing of course `Programming Drones with ROS`?

Anyway, that error is not preventing the assistant to be shown. To see the moveit assistant you need to go to the `Graphical Tools`. The `Graphical Tools` can be found on the icon that looks like a _monitor_, on the top right corner of the IDE (see picture attached)

 ![image](https://get-help.robotigniteacademy.com/uploads/default/original/2X/b/bdd6d6bb7e92a8902efed452b0b372ea048559fe.jpeg)