CIMC cold chain

Fatal error: Uncaught TypeError: fwrite(): Argument #1 ($stream) must be of type resource, bool given in /var/www/html/inc/class/file.class.php:174 Stack trace: #0 /var/www/html/inc/class/file.class.php(174): fwrite(false, '<div id="footer...') #1 /var/www/html/static/themes/default/cusvis_mode/footer/mode_268_1/index.php(200): file::write_file('cache/t268/_en/', 'footer.html', '<div id="footer...') #2 /var/www/html/static/themes/t268/inc/footer.php(7): include('/var/www/html/s...') #3 /var/www/html/static/themes/t268/products.php(193): include('/var/www/html/s...') #4 /var/www/html/static/static/inc/init.php(358): include('/var/www/html/s...') #5 /var/www/html/index.php(7): include('/var/www/html/s...') #6 {main} thrown in /var/www/html/inc/class/file.class.php on line 174