Note: It is always better to copy what is on your screen and pasting it to a reply. This avoids people having a hard time seeing what you post
- what OS are you running on your pi-4?
- what version of mosquito did you install?
In order to make code readable and usable it is necessary to surround your code with three backticks (also known as a left quote or backquote ```)
```
code goes here
```
You can edit and correct your post by clicking the pencil 
icon.
See this post for more details - How to share code or flow json
