The error I get:
You are running an unsupported PHP version. Please upgrade to PHP 7.1.3 or higher before trying to install or update to phpBB 3.3
The forum:
https://www.kreidler.nl
With Chrome I can still visit the site and the forum.
When I start firefox from the cli it says:
(firefox:13317): Gtk-WARNING **: 15:42:28.139: Theme parsing error: gtk.css:1649:16: '-gtk-icon-size' is not a valid property name
(firefox:13317): Gtk-WARNING **: 15:42:28.139: Theme parsing error: gtk.css:1652:16: '-gtk-icon-size' is not a valid property name
Is this a message displayed by your webbrowser?
phpBB is the forum software that runs on the webserver to serve the forum you mentioned. So I guess your webbrowser sends a request to the forum software which in the end causes the server to react with that error message.
I can access the kreidler.nl-forum using firefox 112.0.2 without any problems.
Do you have any addons installed in your firefox which could cause that problem?
Will the problem persist when you use a new (empty) firefox profile?
Works here … FF 112.0.2 (64-bit)
.

Thanks guys.
Interesting, so there is a problem at my side.
After some clicking I found, it seems to be Adblocker Ultimate is causing the problem. When I turn it off the site loads as normal.
Even though Kreidler.nl is in the white list of the add blocker.
Maybe its time for a different add blocker.
But for now the problem is solved.
1 Like
They updated the forum software, now with the add blocker on, the site loads as normal.
I already had that site white listed in the Add Blocker though.
Yes this error it seems, is totally not related to the problem I had.