Review File Upload Error (OJS 3.1.2.1)

Hello!

We’re having an issue with our OJS, when an author upload a file as a Revision File, it cannot be downloaded and a 500 Internal Server Error appears. The file is located inside the host without any other problem and can be downloaded from there, but not from the OJS.

We asked our host about it and created an exception for another example, but it seems to be not fixed.

The error message is:
[Tue Oct 08 10:34:57.945376 2019] [proxy_fcgi:error] [pid 27570] [client NNNN…] AH01071: Got error ‘PHP message: PHP Warning: Zend OPcache API is restricted by “restrict_api” configuration directive in /usr/home/historia-actual0/www/Publicaciones/lib/pkp/classes/cache/FileCache.inc.php on line 59’
[Tue Oct 08 10:35:10.333618 2019] [proxy_fcgi:error] [pid 27990] [client NNNNN…] AH01071: Got error ‘PHP message: FileApiHandler: File articulos/journals/1//articles/1779/submission/review/revision/1779-1-5630-1-15-20191005.d does not exist or is not readable!PHP message: ojs2: 500 Internal Server Error’, referer: https://www.historia-actual.org/Publicaciones/index.php/hao/workflow/index/1779/3

Thank you all in advance.

Have a nice day,

Alberto.