From 9c7df7057ea69b5a328c087b19074c9264dce86a Mon Sep 17 00:00:00 2001
From: Zheng Robert Jia <jia00129@umn.edu>
Date: Mon, 23 Jun 2025 16:16:08 -0400
Subject: [PATCH] Week4 trouble shooting guidelines.

---
 projects/week_4/Instructions.md | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/projects/week_4/Instructions.md b/projects/week_4/Instructions.md
index d297d016..dd298ba5 100644
--- a/projects/week_4/Instructions.md
+++ b/projects/week_4/Instructions.md
@@ -285,3 +285,7 @@ Once you've got your code for this project working, use the command below to com
 ```bash
 $ git commit -a -m "My project 4 code."
 ```
+
+### 3.10 Trouble shooting
+
+If your code doesn't work, quit the terminal, run `colcon build` at the `training_ws` dir level again, then also make sure you've ran the setup scripts: `source install/setup.bash`.