Problem with installation on Plesk - no CSS

I tried to install the latest suiteCRM 7.11.18 on my Plesk webspace

uploaded the zip file to a virtual host and unzipped it there.

changed the directory name from /suiteCRM to /crm

the webserver runs under myuser/psacln , all files already were owned by that user.

I ran all the chmod commands as the install instructions say:

 sudo chown -R www-data:www-data .
  sudo chmod -R 755 .
  sudo chmod -R 775 cache custom modules themes data upload
  sudo chmod 775 config_override.php 2>/dev/null

then I ran the installer, which goes smoothly, no warnings.

and then I get the login screen.
I can login, but it appears no CSS is applied, no images shown.

in the error log, I find the following:

[Tue Apr 20 07:01:41.410793 2021] [core:crit] [pid 27675] (13)Permission denied: [client ***:47696] AH00529: /home/httpd/vhosts/mydomain.com/mysubdomain.com/web/crm/cache/themes/SuiteP/css/.htaccess pcfg_openfile: unable to check htaccess file, ensure it is readable and that ‘/home/httpd/vhosts/mydomain.com/mysubdomain.com/web/crm/cache/themes/SuiteP/css/’ is executable, referer:
[Tue Apr 20 07:01:41.416644 2021] [core:crit] [pid 39090] (13)Permission denied: [client ***:47698] AH00529: /home/httpd/vhosts/mydomain.com/mysubdomain.com/web/crm/cache/jsLanguage/.htaccess pcfg_openfile: unable to check htaccess file, ensure it is readable and that ‘/home/httpd/vhosts/mydomain.com/mysubdomain.com/web/crm/cache/jsLanguage/’ is executable, referer:
[Tue Apr 20 07:01:41.419124 2021] [core:crit] [pid 27679] (13)Permission denied: [client ***:47700] AH00529: /home/httpd/vhosts/mydomain.com/mysubdomain.com/web/crm/cache/jsLanguage/.htaccess pcfg_openfile: unable to check htaccess file, ensure it is readable and that ‘/home/httpd/vhosts/mydomain.com/mysubdomain.com/web/crm/cache/jsLanguage/’ is executable, referer:
[Tue Apr 20 07:01:41.488021 2021] [core:crit] [pid 35725] (13)Permission denied: [client ***:47702] AH00529: /home/httpd/vhosts/mydomain.com/mysubdomain.com/web/crm/cache/themes/SuiteP/js/.htaccess pcfg_openfile: unable to check htaccess file, ensure it is readable and that ‘/home/httpd/vhosts/mydomain.com/mysubdomain.com/web/crm/cache/themes/SuiteP/js/’ is executable, referer:
[Tue Apr 20 07:01:41.942026 2021] [core:crit] [pid 27678] (13)Permission denied: [client ***:47712] AH00529: /home/httpd/vhosts/mydomain.com/mysubdomain.com/web/crm/cache/themes/SuiteP/css/.htaccess pcfg_openfile: unable to check htaccess file, ensure it is readable and that ‘/home/httpd/vhosts/mydomain.com/mysubdomain.com/web/crm/cache/themes/SuiteP/css/’ is executable, referer:

I checked these directories, and there is no .htaccess file in them

What did I do wrong?

EDIT: I had to delete screenshots and referer links from my post, this is so helpful for describing a problem, you might want to revise your images and links policies.

I thought I solved it, but no…

if I run the chmod commands again after installation, the CSS and images appear.
I’m able to create employees, but I’m not able to edit employee information.

EDIT: I am able to edit employee information, but only via the edit form. in-line editing with double click in the employee detail page does not work, although in-line editing in the list view works. weird

the same kind of error message appears:
[Tue Apr 20 07:45:38.229053 2021] [core:crit] [pid 27673] (13)Permission denied: [client :50754] AH00529: /home/httpd/vhosts//web/crm/cache/jsLanguage/Employees/.htaccess pcfg_openfile: unable to check htaccess file, ensure it is readable and that ‘/home/httpd/vhosts/***/web/crm/cache/jsLanguage/Employees/’ is executable, referer:

(and there is no .htaccess file at the location mentioned in the error message)

found diagnostics in admin menu, just tried to run diagnostics, but the result is:
Warning: opendir(cache/diagnostic/3654b65f-5f07-8e7d-9793-607e70bfc8f8/diagnostic20210420-081112/): failed to open dir: No such file or directory in /home/httpd/vhosts/***/web/crm/modules/Administration/DiagnosticRun.php on line 256

so there seems to be an issue with accessing / creating files.

I suspect it’s a permissions issue.

try to substitute ww-data by your web user when giving permissions

as per my first post, I did that already. all files were owned by the same user as apache runs under.

do you have .htaccess file in CRM root at /home/httpd/vhosts/mydomain.com/mysubdomain.com/web/crm/