It's kind of complicated really. Construction started without a start of construction act issued and what has been done was classified as illegal. The land wasn't even expropriated, which has been done now. This is a big problem, since construction cannot "start" without first solving the legal issues. As of today, a news arcticle was posted on the official government site, hinting that what has been done on lot 5 will be demolished to start over, while lot 4 remains suspended indefinitely. You can read more about that here (with google translate)

https://www.mrrb.bg/bg/ministur-shishkov-chastta-ot-am-hemus-ot-sofiya-do-yana-po-malko-asfalt-poveche-shlaka/