I go to the install directory. for example.: MeinDomain.com/Install

The installation runs runs runs and never ends. never never ... it runs in a loop.
I'm using PHP version 7.0
Please see screenshot
[url=https://www.directupload.net][/url]

Any error in the logs folder? Most probably your server doesn't have permission to use 'LOAD DATA INFILE' function? You can try the manual install option. LOAD DATA INFILE and the maxmind functions have been removed from the latest version. This is coming soon.

LOAD DATA INFILE
LOAD DATA INFILE '/var/www/vhosts/web135.c7.jimjam/httpdocs/erefx.de/install/control/geo/GeoIPv6.csv' INTO TABLE `mm_geo_ipv6`
    FIELDS TERMINATED BY ', '
    OPTIONALLY ENCLOSED BY '"'
    ESCAPED BY '"'
    LINES TERMINATED BY '
'
    IGNORE 0 LINES (`from_ip`, `to_ip`, `loc_start`, `loc_end`, `country_iso`, `country`)

can this error not be fixed ? even if I switch to php version 5.6 on plesk, nothing works.

You can only fix it by updating your server permissions to allow the LOAD DATA INFILE function. If that isn't possible, as mentioned before, try the manual install option.

for the manual installation how should i proceed do you have instructions?

It's in the installation instructions. Basically just run the database dump without accessing the installer. Then access the frontend. Any missing details should be auto completed.

do you have a complete SQL file?

As per the last message: "It's in the installation instructions".

You'll find a reference for it in step 6:
https://www.maiansoftware.com/demos/mmusic/docs/install.html

it's a shame that you don't update the script, it's very nice script.

Thank you.

v3.0 is coming soon:
https://www.maianmusic.com/changelog.html

Please Help , log  error
[Error Code: 2] htmlspecialchars(): charset `none' not supported, assuming utf-8
[Date/Time: 9 November 2020 @ 06:17AM]
[Error on line 622 in file /var/www/vhosts/web343/httpdocs/ercopm.com/control/functions.php]

Open the 'control/functions.php' file and find line 622. Change to:

$data = htmlspecialchars($data, ENT_QUOTES, 'UTF-8' );

OR, in your php.ini file, uncomment:

default_charset	= UTF-8