Installation for an absolute beginner

dear forum
i am an absolute beginner concerning websites and co. the installation seemed easy to me … copy the data to the webspace. then I redirected the subdomain kanboard.mywebsite.ch to the folder kanboard.
but only an error message appears:
"Internal Server Error
The server encountered an internal error or misconfiguration and was unable to complete your request.
Please contact the server administrator, [no address given] and inform them of the time the error occurred, and anything you might have done that may have caused the error.
More information about this error may be available in the server error log. "

Then I tried if it would work with a mysql database. database set up, connection data stored in config.default.php, renamed to config.php.

same error message …

Can anyone help me further? as I said, I am an absolute newcomer to this field …

my provider offers parallels confixx for the configuration of the web hosting

THANK YOU

There could be many reasons for an Internal Server Error. Try to check your error logs in parallels confixx to get further information.

I’m also a newbie

Did the same thing on my Ionos web space.

Then I changed the htaccess like this:

Pass HTTP Authorization header via environment variable to PHP backend

to make HTTP Basic Authentication work for Apache/FastCGI/php-fpm

setups (required to authenticate over the API)

SetEnvIf Authorization .+ HTTP_AUTHORIZATION=$0 Options -MultiViews
<IfModule mod_env.c>
    SetEnv HTTP_MOD_REWRITE On
</IfModule>


# Uncomment this line depending of your Apache configuration
# RewriteBase /

#RewriteEngine On
#RewriteCond %{REQUEST_FILENAME} !-f
#RewriteRule ^ index.php [QSA,L]

############################
## Uncomment the two lines below to enable force HTTPS capabilities
############################

 RewriteCond %{HTTPS} !=on 
 RewriteRule ^ https://%{HTTP_HOST}%{REQUEST_URI} [R,L]
ModPagespeed Off

now when I call my domain I get:
Verbindung zum MySQL Server erfolgreich aufgebaut.

Which looks good but I also don’t Know HowTo get that running

HOPE for HELP
PLS

PS:
my issue is here:

@maniel

Have had success installing
I’m still in trouble