No Public installation - Oops! Something went wrong.

Hello 🙂

I wanted to try to install Flarum on my webhosting from Ionos.
I was able to install it with the non-public version.

I was able to call up and carry out the installation as normal via the domain.
PHP 8.3 is used.

But now I only get the error with every click:
"Oops! Something went wrong. Please reload the page and try again.

The whole thing under the domain without www.

With www. in front of it, the error message appears:
Oops! Something went wrong during a cross-origin request. Please reload the page and try again

I'm at a bit of a loss as to what to do. :,D

matthiasx0.de is the used Domain.

Cya 🙂

MATTHIASx0 redirect www to non www, eg using htaccess. Or install the migratetoflarum canonical extension to do it for you.

Just tried it with:
RewriteEngine On RewriteBase / RewriteCond %{HTTP_HOST} ^www\.(.*)$ [NC] RewriteRule ^(.*)$ https://%1/$1 [R=301,L]

Looks good now. 😃
Got no new error. ^^