Recently i was deploying orangeHRM and ran into ymfony/cache and symfony/log Not Writeable error during installation, tried many things regarding write permissions chmod in liux and security user add in windows. etc etc.
but still the following Error was there on re-check:
Finally i browsed to the folder symfony located in OrageHRM and found that cache and log folders were created by default. just created those folders and bingo it worked
Raffye Memon's Blog 