You link to an uncart binary in your guide. Not only is this not an upstream build - it lacks source code. I can't find any forks on github for it, which means it came from elsewhere. Look, hate to be…
A good example by @ionafan2 can be found and is still waiting in the original @beberlei fork here:
- https://github.com/beberlei/DoctrineExtensions/pull/110