I am not sure how fully explain this, as I still really confused myself. For some reason, I was making some adjustments to my blueprints and now Kirby is not taking any .php file.
For example, instead of home.php keep fetching default.php.
Check what text files you have in your
/content/home folder. In a standard Kirby installation (not multi-language) there should be only a home.txt content files (and maybe additional media files and their metadata files). Make sure there are no extra .txt files.
What sort of changes did you make to your blueprints and where?
OMG, yes, for some reason I didn’t have anymore a home.txt – that solved the issues!