I updated NDK, which resulted in some critical errors, because of outdated Gradle used deprecated NDK features.
I read about it, and decided to fix it properly, not hacking around - updatig that old gradle 2.2 to 4.10.2.
I spend about 6 hours fixing all problems and warnings that gradle had because of that, and then some.
At the end, some things still didn't work, but i was clearly missing some code from version control. I clicked update and left it for an hour.
THIS FREAKING BUGGY TFS PLUGIN RUINED ALL MY FILES I N THE PROJECT. WHY ARE WE STILL USING THAT F*King TFS???
Literally, I'm left now with .iml files in folders.
And my updated gradle files are gone too.