Hi Svenni,
It's due to your current Settings.php entries for $SITE['wxtags'] .. that entry cannot be an URL, since the URL would return no PHP readable data. It has to be a relative FILE location for the testtags.php file, so change it to $SITE['WXtags'] = './testtags.php';
. You should do a similar change for the $SITE['clientrawfile'] to be $SITE['clientrawfile'] = './clientraw.txt';
The Almanac Sun/Moon page will be fixed when you get the $SITE['wxtags'] corrected.
Best regards,
Ken