I'm getting a path directory error following the "Unity Basics" tutorial in Unity

[Zenithzt]

Steps

1. Open unity and create a new project
2. go to package manager, click the + symbol in the top left and click "add github URL"
3. paste "https://github.com/ecsact-dev/ecsact_unity.git" into the box and add (from https://ecsact.dev/start/unity page)

Results

path directory error