Joomla News2 Frontend cannot access

loonmei

We are using Joomla news2 template for several years, but yesterday suddenly frontend cannot aceess, backend administrator site not problem. How to fix? Thanks
For your info, sunday (12dec) still can access from frontend. we also restored the web files based on the backup date which is the 10th of December.

But, the site is still inaccessible with the error logs below.

[13-Dec-2022 02:29:26 UTC] PHP Fatal error: Uncaught Error: Undefined constant "MB_OVERLOAD_STRING" in /home/intimesc/public_html/news2a/libraries/vendor/joomla/string/src/phputf8/utf8.php:38
Stack trace:
#0 /home/intimesc/public_html/news2a/libraries/vendor/composer/autoload_real.php(66): require()
#1 /home/intimesc/public_html/news2a/libraries/vendor/composer/autoload_real.php(56): composerRequire205c915b9c7d3e718e7c95793ee67ffe('2fb9d6f23c8e8fa...', '/home/intimesc/...')
#2 /home/intimesc/public_html/news2a/libraries/vendor/autoload.php(7): ComposerAutoloaderInit205c915b9c7d3e718e7c95793ee67ffe::getLoader()
#3 /home/intimesc/public_html/news2a/libraries/cms.php(36): require('/home/intimesc/...')
#4 /home/intimesc/public_html/news2a/includes/framework.php(18): require_once('/home/intimesc/...')
#5 /home/intimesc/public_html/news2a/index.php(40): require_once('/home/intimesc/...')
#6 {main}
thrown in /home/intimesc/public_html/news2a/libraries/vendor/joomla/string/src/phputf8/utf8.php on line 38
Any idea?

ja-developer

loonmei Hello,
You can share your site url & admin login in private post, we can take a look then.

Also it looks like your GK PRO membership has expired some years ago. You might want to renew your membership to receive our full technical support and gain access to the latest Gavick updates.