Unable to write public_html/cache

See a 500 error.

 PHP Fatal error:  Uncaught  --> Smarty: unable to write file /usr/share/nginx/html/revista.sudamericano.edu.ec/public_html/cache/t_compile/wrt65f1d896a5e3c0_59437071 

Using OJS 3.3

when accessing hosted journals. On the server the php-fpm/www.log log shows this error. I try to enable other OJS instance but, show the same error

(Cross-linking: Permiso de escritura a la carpeta cache de ojs 3.3)