Error: '/home/virtual/site1/fst/var/www/html/libs/../templates_c' is not writable! Please chmod this directory to 777

Please fix the above error(s), install halted!

Error: '/home/virtual/site1/fst/var/www/html/libs/../cache' is not writable! Please chmod this directory to 777

Please fix the above error(s), install halted!