An error occurred while loading the map layer

I am follwing Switch2OSM link (https://switch2osm.org/serving-tiles/manually-building-a-tile-server-ubuntu-24-04-lts/) for tileserver implementation & I am getting the following error:

root@forlinx:/run/media/mmcblk1p1/tileserver# su - _renderd -c "renderd -f -c /etc/renderd.conf"
** INFO: 14:49:55.349: Rendering daemon started (version 0.7.1)
** INFO: 14:49:55.350: Initialising request queue
** INFO: 14:49:55.350: Parsing config file: /etc/renderd.conf
** INFO: 14:49:55.351: config renderd: unix socketname=/run/renderd/renderd.sock
** INFO: 14:49:55.351: config renderd: num_threads=2
** INFO: 14:49:55.351: config renderd: num_slaves=0
** INFO: 14:49:55.351: config renderd: tile_dir=/run/media/mmcblk1p1/tileserver/tiles/
** INFO: 14:49:55.351: config renderd: stats_file=/run/renderd/renderd.stats
** INFO: 14:49:55.351: config renderd: pid_file=var/run/renderd/renderd.pid
** INFO: 14:49:55.351: config mapnik: plugins_dir=/usr/lib/mapnik/input
** INFO: 14:49:55.351: config mapnik: font_dir=/run/media/mmcblk1p1/tileserver/openstreetmap-carto/fonts/
** INFO: 14:49:55.351: config mapnik: font_dir_recurse=1
** INFO: 14:49:55.351: config renderd(0): Active
** INFO: 14:49:55.351: config renderd(0): unix socketname=/run/renderd/renderd.sock
** INFO: 14:49:55.351: config renderd(0): num_threads=2
** INFO: 14:49:55.351: config renderd(0): tile_dir=/run/media/mmcblk1p1/tileserver/tiles/
** INFO: 14:49:55.351: config renderd(0): stats_file=/run/renderd/renderd.stats
** INFO: 14:49:55.351: config renderd(0): pid_file=var/run/renderd/renderd.pid
** INFO: 14:49:55.351: config map 0: name(s2o) file(/run/media/mmcblk1p1/tileserver/openstreetmap-carto/mapnik.xml) uri(/tile/) output_format(png256) htcp() host(localhost)
** INFO: 14:49:55.351: Initialising unix server socket on /run/renderd/renderd.sock
** INFO: 14:49:55.352: Renderd is using mapnik version 3.1.0
** INFO: 14:49:55.489: Running in foreground mode...

** (process:14161): ERROR **: 14:49:55.882: An error occurred while loading the map layer 's2o': Postgis Plugin: ERROR: syntax error at or near "0.001"
LINE 10: way_area/NULLIF(POW(0.0010.28,2),0) AS way_pixels,
^
in executeQuery Full sql was: 'SELECT * FROM (SELECT
way, way_pixels,
COALESCE(wetland, landuse, "natural") AS feature
FROM (SELECT
way,
('landuse_' || (CASE WHEN landuse IN ('forest', 'farmland', 'residential', 'commercial', 'retail', 'industrial',
'meadow', 'grass', 'village_green', 'vineyard', 'orchard') THEN landuse END)) AS landuse,
('natural_' || (CASE WHEN "natural" IN ('wood', 'sand', 'scree', 'shingle', 'bare_rock', 'heath', 'grassland', 'scrub') THEN "natural" END)) AS "natural",
('wetland_' || (CASE WHEN "natural" IN ('wetland', 'mud') THEN (CASE WHEN "natural" IN ('mud') THEN "natural" ELSE tags->'wetland' END) END)) AS wetland,
way_area/NULLIF(POW(0.0010.28,2),0) AS way_pixels,
way_area
FROM planet_osm_polygon
WHERE (landuse IN ('forest', 'farmland', 'residential', 'commercial', 'retail', 'industrial', 'meadow', 'grass', 'village_green', 'vineyard', 'orchard')
OR "natural" IN ('wood', 'wetland', 'mud', 'sand', 'scree', 'shingle', 'bare_rock', 'heath', 'grassland', 'scrub'))
AND way_area > 0.010::real0::real
AND building IS NULL
) AS features
ORDER BY way_area DESC, feature
) AS landcover_low_zoom LIMIT 0'
encountered during parsing of layer 'landcover-low-zoom' in Layer of '/run/media/mmcblk1p1/tileserver/openstreetmap-carto/mapnik.xml'

** (process:14161): ERROR **: 14:49:55.880: An error occurred while loading the map layer 's2o': Postgis Plugin: ERROR: syntax error at or near "0.001"
LINE 10: way_area/NULLIF(POW(0.0010.28,2),0) AS way_pixels,
^
in executeQuery Full sql was: 'SELECT * FROM (SELECT
way, way_pixels,
COALESCE(wetland, landuse, "natural") AS feature
FROM (SELECT
way,
('landuse_' || (CASE WHEN landuse IN ('forest', 'farmland', 'residential', 'commercial', 'retail', 'industrial',
'meadow', 'grass', 'village_green', 'vineyard', 'orchard') THEN landuse END)) AS landuse,
('natural_' || (CASE WHEN "natural" IN ('wood', 'sand', 'scree', 'shingle', 'bare_rock', 'heath', 'grassland', 'scrub') THEN "natural" END)) AS "natural",
('wetland_' || (CASE WHEN "natural" IN ('wetland', 'mud') THEN (CASE WHEN "natural" IN ('mud') THEN "natural" ELSE tags->'wetland' END) END)) AS wetland,
way_area/NULLIF(POW(0.0010.28,2),0) AS way_pixels,
way_area
FROM planet_osm_polygon
WHERE (landuse IN ('forest', 'farmland', 'residential', 'commercial', 'retail', 'industrial', 'meadow', 'grass', 'village_green', 'vineyard', 'orchard')
OR "natural" IN ('wood', 'wetland', 'mud', 'sand', 'scree', 'shingle', 'bare_rock', 'heath', 'grassland', 'scrub'))
AND way_area > 0.010::real0::real
AND building IS NULL
) AS features
ORDER BY way_area DESC, feature
) AS landcover_low_zoom LIMIT 0'
encountered during parsing of layer 'landcover-low-zoom' in Layer of '/run/media/mmcblk1p1/tileserver/openstreetmap-carto/mapnik.xml'

The only difference is I am trying to implement it without systemd service that ubuntu offers. Kindly provide me a solution to overcome the above error. Thanks in advance

Start by reviewing /etc/renderd.conf and the mapnik.xml layer named landcover-low-zoom, then rerun the documented renderd command as _renderd to reproduce the PostgreSQL syntax error. Compare the generated SQL around the POW expression and verify that the s2o map layer loads without an error.