[Error Message] Fatal error: Call to undefined function validate_utf8_string()

[ronaldo24]

i have a probleme
http://www.dz-mowadf.ga/
Fatal error: Call to undefined function validate_utf8_string() in /home/the3dmen/public_html/inc/db_mysqli.php on line 865

site is down

[.m.]

Please make sure you have uploaded all new files.

esp. ./inc/functions.php file

[ronaldo24]

yes all are up to date

[.m.]

it looks like you can access admin panel of your forum. can you run file verification tool
available at the tools & maintenance section and check for changed / missing php files

[ronaldo24]

just the login section available
but after success login i get the same error

[StefanT]

inc/functions.php is obviously not up to date.

[ronaldo24]

yes and i have fix it thank you