Question

How to fix PHP Fatal error: Uncaught --> Smarty: unable to write file

I just setup a new droplet on which I unzipped a prestashop installation.

I get this error when trying to access the admin area:

PHP Fatal error:  Uncaught  --> Smarty: unable to write file /var/www/testapp/public_html/cache/smarty/compile/9b/4f/93/wrt5513f60bb63d41_15387074 <-- \n  thrown in /var/www/testapp/public_html/tools/smarty/sysplugins/smarty_internal_write_file.php on line 46

I’ve tried the following without any luck:

codesudo chown -R www-data:www-data /var/www/testapp/public_html/
sudo chown -R $USER:$USER /var/www/testapp/public_html/
tried with permissions 777 over cache folder - still doesn't work

Any suggestions? I’ve found many other users with this problem but none of their fixes worked for me.

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Set www-data:www-data permissionon as;

sudo chown -R www-data:www-data /var/www/*

If you logged as root user don’t use your code like below.

sudo chown -R $USER:$USER /var/www/testapp/public_html/

you should use this code to give the permissions

sudo chmod -R 755 /var/www

We can use the $USER environmental variable to assign ownership to the account that we are currently signed in on (make sure you’re not logged in as root).

please recreate the instance and try again. it should be work.


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You should change directories permissions to 755 and files permissions to 644. Have you also checked your .htaccess file isn’t corrupt?

If you logged as root user don’t use this ($USER:$USER) like below,

sudo chown -R $USER:$USER /var/www/testapp/public_html/

you should use this code for, give the permissions

sudo chmod -R 755 /var/www

please recreate your droplet (instance) and try again.

for more details https://www.digitalocean.com/community/tutorials/how-to-set-up-nginx-server-blocks-virtual-hosts-on-ubuntu-16-04

We can use the $USER environmental variable to assign ownership to the account that we are currently signed in on (make sure you’re not logged in as root). This will allow us to easily create or edit the content in this directory:

@catalinmn and @MatthewTV I know this comes a few years after the initial discussion, but I have a scenario here…

I applied the above solution:

find /var/www/testapp/public_html/cache -type d -exec chmod 755 {} ; find /var/www/testapp/public_html/cache -type f -exec chmod 644 {} ;

And now my XAMPP app does not want to open anymore.

I am using a Mac.

Any suggestions how to approach this issue?

I have been struggling with this mysql/xampp/apache startup for 2 days now…

I getting the same issue in campfiretech i think my .htaccess file isn’t corrupt. so can you further guide me.

I have a same problem in Pradhan Mantri Yojana. What Can i Do? Explain me Step By Step Method to remove the fetal error after installing and active theme.

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