# ROS2 Jazzy Crash Course 2025 Part 1, Robot doesn't appear in sim

**URL:** <https://get-help.theconstruct.ai/t/ros2-jazzy-crash-course-2025-part-1-robot-doesnt-appear-in-sim/39538>\
**Category:** General Support\
**Created:** [January 5, 2026, 11:44am UTC](https://get-help.theconstruct.ai/t/ros2-jazzy-crash-course-2025-part-1-robot-doesnt-appear-in-sim/39538 "2026-01-05T11:44:59Z")\
**Posts on this page:** 3\
**Page:** 1

<div class="post-metadata">

**Author:** ![imbashamba](https://get-help.theconstruct.ai/letter_avatar_proxy/v4/letter/i/8491ac/32.png) [@imbashamba](https://get-help.theconstruct.ai/u/imbashamba)\
**Post date:** [January 5, 2026, 11:44am UTC](https://get-help.theconstruct.ai/t/ros2-jazzy-crash-course-2025-part-1-robot-doesnt-appear-in-sim/39538/1 "2026-01-05T11:44:59Z")

</div>

I have same issue as in comment on youtube:  
" [@SelwynNoble](https://www.youtube.com/@SelwynNoble)

[3 недели назад](https://www.youtube.com/watch?v=Se5pvRlTX8s&lc=UgyF2-TVhZ513wlfWBZ4AaABAg)

My robot will not launch with the launch. Everything is in the Gazebo but the robot. Also, the robot did appear once, and in the move the robot part of the video my commands to move the robot would not work.There seems to be a missing command that may be preventing the robot from launching."

 ![the_construct_problem1](https://get-help.theconstruct.ai/uploads/default/original/2X/6/60a6cfe04248fa911e5e462d09f93873f7bedb24.png)

Also there is window “Select a simulation”, but there are no options available in both dropdowns.

---

<div class="post-metadata">

**Author:** ![imbashamba](https://get-help.theconstruct.ai/letter_avatar_proxy/v4/letter/i/8491ac/32.png) [@imbashamba](https://get-help.theconstruct.ai/u/imbashamba)\
**Post date:** [January 5, 2026, 5:06pm UTC](https://get-help.theconstruct.ai/t/ros2-jazzy-crash-course-2025-part-1-robot-doesnt-appear-in-sim/39538/2 "2026-01-05T17:06:37Z")

</div>

fixed after did:  
sudo apt update  
sudo apt upgrade

and then re-run course\_install.sh

---

<div class="post-metadata">

**Author:** ![system](https://get-help.theconstruct.ai/uploads/default/original/2X/9/9d3ce8305cc0d0d9b6e07d15767a6f245c526f1b.jpeg) [@system](https://get-help.theconstruct.ai/u/system)\
**Post date:** [January 15, 2026, 5:07pm UTC](https://get-help.theconstruct.ai/t/ros2-jazzy-crash-course-2025-part-1-robot-doesnt-appear-in-sim/39538/3 "2026-01-15T17:07:11Z")

</div>

This topic was automatically closed 10 days after the last reply. New replies are no longer allowed.