Errors reading /etc/freeradius/3.0: No such file or directory

Hello, I migrate to freeradius 3.0 (from freeradius 2.2) Way of files configuraton freeradius3.0 have additional subfolder ./3.0, i would like to discarding subfolder 3.0 and move conf files to folder freeradius (as I no have sql etc, user`s names saved in files, historicaly inheritence.I have many scripts for update users`s files.) I change one string in file radius.conf to raddbdir = /etc/freeradius/, restart freeradius service and received error *Errors reading /etc/freeradius/3.0: No such file or directory* What I should do yet change? And can i change way of configuration files to /etc/freeradius?