XF 2.1 css.php have a HTTP error 500

[John rus]

I have a site on shared hosting
css.php often have a 500 error
What can you advise me?


Possible to somehow enable file caching for this file ?
Redis not have. Do i can use file cashing for this file only ?
For loading this file static. For guest or member ?

Sorry for my bad English

 

[John rus]

do i can use Filesystem for caching css, like this ?

$config['cache']['context']['css'] = [
            'provider' => 'Filesystem',
            'config' => [
  'directory' => 'cache/'

            ],
        ];

it correct ?