Clean install doesnt help either.  

Okay now i have less errors.  

Could you direct me little more? I am a complete beginner. Where to check it?I also found what Mr.KnarfB wrote somewhere that there is this fileC:\ST\STM32CubeIDE\plugins\com.st.stm32cube.ide.mcu.externaltools.gnu-tools-for-stm32.11.3.rel1.win32_1.1....

Oh. And it doesnt compile as a default project. Even when I just add 4 PWM channels, generace C code and press run this error occurs.

Its like thisi also attach build log file