In your Settings-weather.php, you have $SITE['UV'] = false; // set to false if no UV sensor
$SITE['SOLAR'] = false; // set to false if no Solar sensor
That should be $SITE['UV'] = true; // set to false if no UV sensor
$SITE['SOLAR'] = true; // set to false if no Solar sensor
to enable the display of the station's UV and Solar sensor data.