Hi @bill6502, thank you for your answer.
Well, the only file with the <Directory> part which relates to mythweb is mythweb.conf, where I have:
<Directory "/var/www/html/mythweb/data" >
This directory entry is correct in this case. In /var/www/html/ I have the normal Web pages, ie. index.php which works.
The mythweb subdirectory is a symblink to /usr/share/mythtv/mythweb
I hope, mythweb works with symbol links?
Have a nice evening!
Thank you!
Kind regards,
Horst