Update TROUBLESHOOTING-en-US.md

Signed-off-by: Luísa F. Coelho <[email protected]>

docs/TROUBLESHOOTING-en-US.md

@@ -14,4 +14,28 @@ module.c:1:10: fatal error: Python.h: No such file or directory
     error: command 'x86_64-linux-gnu-gcc' failed with exit status 1
 ```
 
-Please try to install `python3-dev`. E.g. via `apt install python3-dev`, if you are using a Debian-like distro, or use your distro manager package. Make sure that you use the correct version (e.g. `python3.6-dev` or `python3.7-dev`). You can check your version via `python3 --version`.
+Please try to install `python3-dev`. E.g. via `apt install python3-dev`, if you are using a Debian-like distro, or use your distro manager package. Make sure that you use the correct version (e.g. `python3.6-dev` or `python3.7-dev`). You can check your version via `python3 --version`.
+
+## Error `pinned with ==`
+
+While running `pip install requeriments`, a inexact pinning error may appear. Therefore, use "--no-deps" along the installation:
+
+~~~Linux
+pip install -r data_collection/requirements-dev.txt --no-deps
+~~~
+
+##  Error `legacy-install`
+
+In your WSL terminal, a `legacy-install failure`, like this one below, may occur while installing packages. 
+
+```
+error: legacy-install failure
+error: command 'x86_64-linux-gnu-gcc' failed: No such file or directory
+```
+
+Thus, upgrade your pio and install some essential libraries for Linux:
+
+~~~Linux
+python3 -m pip install --upgrade pip
+sudo apt-get install build-essential libssl-dev libffi-dev python3-dev
+~~~