Suddenly my site doesn't work anymore

[ohaldi]

I haven't changed anything on my website since months. However, it doesn't work any more and gives me the following error:
Warning: Private methods cannot be final as they are never overridden by other classes in /home/httpd/vhosts/haldi.ch/httpdocs/cms/modules/AceSyntax/AceSyntax.module.php on line 54

The link : www.haldi.ch
What could be the reason?
The administrative management of the CMS works perfectly.

Many thanks in advance for your help
Otto

[DIGI3]

You may not have changed anything, but I bet your host upgraded the PHP version. It looks like you're using PHP 8.2, you'll need to make sure you're using the latest CMSMS version and that all of your third-party modules are compatible. Either that, or roll back to the version you had when it was working, if your host allows it.

[ohaldi]

You're right. My web host has the following PHP version: 8.2.25.
In June, I updated CMS Made Simple to the following version: 2.2.21
I'll see what PHP version was available at that time? Maybe that's the problem. But I'm not a specialist in this field.
Thanks again for your help.

[DIGI3]

CMSMS 2.2.21 will work on PHP 8.2, but some of your third-party modules may not. A quick fix may be to just rename the AceSyntax folder in your /modules/ folder, as that's what your error message appears to be from.

[ohaldi]

Thanks so much that fixed the problem, you help is appreciated
Otto