Website is down after 3.6.2 upgrade

[gabriel1990]

Hello,I purchased then upgraded the script from 3.6.0 to 3.6.2 and I see an error
Fatal error: Call to undefined function CHV\mb_strlen() in /home/business/public_html/imgup.io/app/lib/classes/class.user.php on line 399

 

[gabriel1990]

http://imgup.io

 

[Rodolfo]

Chevereto needs php multibyte extension enabled.

 

[gabriel1990]

How to do that?

 

[Rodolfo]

How to do that?

That is something that your server admin should do it. Those extensions comes by default in PHP so someone disabled those.

 

[gabriel1990]

I have cpanel and whm access.Can you show me a tutorial?Thank you

 

[gabriel1990]

I activated the multybite extension and the error is still there

 

[gabriel1990]

Please,I need thi solved,the website is down.

 

[Rodolfo]

Did you restarted the server?

 

[gabriel1990]

Yes,I did everything is possible,now I installed the backup

 

[Rodolfo]

Sorry is not multibyte, is mbstring. http://php.net/manual/en/mbstring.installation.php