Getting error after installation.

Fatal error: Uncaught Error: Class 'Smarty_Internal_Undefined' not found in /opt/lampp/htdocs/topluluk/sys/Ext/Smarty/sysplugins/smarty_internal_extension_handler.php:164 Stack trace: #0 /opt/lampp/htdocs/topluluk/sys/Ext/Smarty/Smarty.class.php(992): Smarty_Internal_Extension_Handler->__get('loadPlugin') #1 /opt/lampp/htdocs/topluluk/sys/Ext/Smarty/sysplugins/smarty_internal_template.php(627): Smarty->loadPlugin('Smarty_Internal...') #2 /opt/lampp/htdocs/topluluk/sys/Ext/Smarty/sysplugins/smarty_template_compiled.php(183): Smarty_Internal_Template->loadCompiler() #3 /opt/lampp/htdocs/topluluk/sys/Ext/Smarty/sysplugins/smarty_template_compiled.php(141): Smarty_Template_Compiled->compileTemplateSource(Object(Smarty_Internal_Template)) #4 /opt/lampp/htdocs/topluluk/sys/Ext/Smarty/sysplugins/smarty_template_compiled.php(105): Smarty_Template_Compiled->process(Object(Smarty_Internal_Template)) #5 /opt/lampp/htdocs/topluluk/sys/Ext/Smarty/sysplugins/smarty_internal_template.php(206): Smarty_Template_Compiled->render(Object(Sma in /opt/lampp/htdocs/topluluk/sys/Ext/Smarty/sysplugins/smarty_internal_extension_handler.php on line 164

Which version of PHP are you using ? It seems you are using an old version of PHP

Hello, I have same error and I am using the latest version of PHP and MySQL.

I have 2 questions, is there any themes to choose, and if I buy for $49, you can install everything and setup on my server right? How long do you guys need to setup it?

I am using PHP Version 7.1.9

@gokilojajarian , can you try downloading and installing it again ?

I have 2 questions, is there any themes to choose, and if I buy for $49, you can install everything and setup on my server right? How long do you guys need to setup it?

Yes. We will install it for you. There are two themes to choose from. Due to a recent theme rewrite we had to disable some themes. But it is quite easy to customize as everything can be edited from a single central file.

I'm sorry, my mistake. The problem is solved. Also I added new translation file for Turkish Language on Github.

The class missing is supposed to be in the Smarty folder:

Try to upload my Smarty folder Smarty.zip
via FTP to (overwrite Your Smarty folder with mine):

sys/Ext/

Then let me know if it is working please.

P.S.: If possible You should make use of PHP 7.3